56133320 has 32 divisors (see below), whose sum is σ = 133731000. Its totient is φ = 21132288.

The previous prime is 56133313. The next prime is 56133331. The reversal of 56133320 is 2333165.

It can be written as a sum of positive squares in 4 ways, for example, as 55383364 + 749956 = 7442^2 + 866^2 .

It is a super-2 number, since 2×56133320² = 6301899228444800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40595 + ... + 41954.

Almost surely, 2^56133320 is an apocalyptic number.

It is an amenable number.

56133320 is an abundant number, since it is smaller than the sum of its proper divisors (77597680).

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

56133320 is a wasteful number, since it uses less digits than its factorization.

56133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82577 (or 82573 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 56133320 is about 7492.2172953005. The cubic root of 56133320 is about 382.8896054431.

Adding to 56133320 its reverse (2333165), we get a palindrome (58466485).

The spelling of 56133320 in words is "fifty-six million, one hundred thirty-three thousand, three hundred twenty".