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51955264 = 26172532
BaseRepresentation
bin1100011000110…
…0011001000000
310121202121020001
43012030121000
5101300032024
65053325344
71200420034
oct306143100
9117677201
1051955264
1127366839
1215496854
13a9c137a
146c861c4
154864244
hex318c640

51955264 has 63 divisors (see below), whose sum is σ = 111625507. Its totient is φ = 23988224.

The previous prime is 51955231. The next prime is 51955283. The reversal of 51955264 is 46255915.

The square root of 51955264 is 7208.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 13017664 + 38937600 = 3608^2 + 6240^2 .

It is a Duffinian number.

Its product of digits (54000) is a multiple of the sum of its prime divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 980262 + ... + 980314.

Almost surely, 251955264 is an apocalyptic number.

51955264 is the 7208-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51955264

51955264 is an abundant number, since it is smaller than the sum of its proper divisors (59670243).

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

51955264 is an equidigital number, since it uses as much as digits as its factorization.

51955264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 72 counting only the distinct ones).

The product of its digits is 54000, while the sum is 37.

The cubic root of 51955264 is about 373.1440480368.

The spelling of 51955264 in words is "fifty-one million, nine hundred fifty-five thousand, two hundred sixty-four".

Divisors: 1 2 4 8 16 17 32 34 53 64 68 106 136 212 272 289 424 544 578 848 901 1088 1156 1696 1802 2312 2809 3392 3604 4624 5618 7208 9248 11236 14416 15317 18496 22472 28832 30634 44944 47753 57664 61268 89888 95506 122536 179776 191012 245072 382024 490144 764048 811801 980288 1528096 1623602 3056192 3247204 6494408 12988816 25977632 51955264