56811136 has 16 divisors (see below), whose sum is σ = 113178690. Its totient is φ = 28405504.

The previous prime is 56811133. The next prime is 56811149. The reversal of 56811136 is 63111865.

It can be written as a sum of positive squares in only one way, i.e., 52649536 + 4161600 = 7256^2 + 2040^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×56811136² = 6455010347220992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56811098 and 56811107.

It is not an unprimeable number, because it can be changed into a prime (56811133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221791 + ... + 222046.

Almost surely, 2^56811136 is an apocalyptic number.

It is an amenable number.

56811136 is a deficient number, since it is larger than the sum of its proper divisors (56367554).

56811136 is an equidigital number, since it uses as much as digits as its factorization.

56811136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443851 (or 443839 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 56811136 is about 7537.3162332491. The cubic root of 56811136 is about 384.4245882308.

The spelling of 56811136 in words is "fifty-six million, eight hundred eleven thousand, one hundred thirty-six".