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56127881 = 199073257
BaseRepresentation
bin1101011000011…
…1000110001001
310220121120222102
43112013012021
5103332043011
65323003145
71251036065
oct326070611
9126546872
1056127881
1129756787
12169694b5
13b822684
147650aa5
154dda73b
hex3587189

56127881 has 8 divisors (see below), whose sum is σ = 59165280. Its totient is φ = 53098848.

The previous prime is 56127871. The next prime is 56127923. The reversal of 56127881 is 18872165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56127881 - 26 = 56127817 is a prime.

It is a super-2 number, since 2×561278812 = 6300678051100322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56127871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15605 + ... + 18861.

It is an arithmetic number, because the mean of its divisors is an integer number (7395660).

Almost surely, 256127881 is an apocalyptic number.

It is an amenable number.

56127881 is a deficient number, since it is larger than the sum of its proper divisors (3037399).

56127881 is a wasteful number, since it uses less digits than its factorization.

56127881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183.

The product of its digits is 26880, while the sum is 38.

The square root of 56127881 is about 7491.8543098488. The cubic root of 56127881 is about 382.8772384341.

The spelling of 56127881 in words is "fifty-six million, one hundred twenty-seven thousand, eight hundred eighty-one".

Divisors: 1 19 907 3257 17233 61883 2954099 56127881