56552331 has 16 divisors (see below), whose sum is σ = 85835520. Its totient is φ = 32783520.

The previous prime is 56552323. The next prime is 56552333. The reversal of 56552331 is 13325565.

It is not a de Polignac number, because 56552331 - 2³ = 56552323 is a prime.

It is a super-2 number, since 2×56552331² = 6396332283067122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56552333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36496 + ... + 38013.

It is an arithmetic number, because the mean of its divisors is an integer number (5364720).

Almost surely, 2^56552331 is an apocalyptic number.

56552331 is a deficient number, since it is larger than the sum of its proper divisors (29283189).

56552331 is a wasteful number, since it uses less digits than its factorization.

56552331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74546.

The product of its digits is 13500, while the sum is 30.

The square root of 56552331 is about 7520.1283898614. The cubic root of 56552331 is about 383.8399465902.

Adding to 56552331 its reverse (13325565), we get a palindrome (69877896).

The spelling of 56552331 in words is "fifty-six million, five hundred fifty-two thousand, three hundred thirty-one".