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56125278 = 23311194973
BaseRepresentation
bin1101011000011…
…0011101011110
310220121110102000
43112012131132
5103332002103
65322543130
71251025356
oct326063536
9126543360
1056125278
1129754830
1216967aa6
13b821431
14764db66
154dd9aa3
hex358675e

56125278 has 64 divisors (see below), whose sum is σ = 143251200. Its totient is φ = 16109280.

The previous prime is 56125261. The next prime is 56125291. The reversal of 56125278 is 87252165.

It is a happy number.

56125278 is a `hidden beast` number, since 561 + 25 + 2 + 78 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8800 + ... + 13772.

It is an arithmetic number, because the mean of its divisors is an integer number (2238300).

Almost surely, 256125278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56125278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71625600).

56125278 is an abundant number, since it is smaller than the sum of its proper divisors (87125922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56125278 is a wasteful number, since it uses less digits than its factorization.

56125278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014 (or 5008 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 56125278 is about 7491.6805858232. The cubic root of 56125278 is about 382.8713195405.

The spelling of 56125278 in words is "fifty-six million, one hundred twenty-five thousand, two hundred seventy-eight".

Divisors: 1 2 3 6 9 11 18 19 22 27 33 38 54 57 66 99 114 171 198 209 297 342 418 513 594 627 1026 1254 1881 3762 4973 5643 9946 11286 14919 29838 44757 54703 89514 94487 109406 134271 164109 188974 268542 283461 328218 492327 566922 850383 984654 1039357 1476981 1700766 2078714 2551149 2953962 3118071 5102298 6236142 9354213 18708426 28062639 56125278