56502331 has 2 divisors, whose sum is σ = 56502332. Its totient is φ = 56502330.

The previous prime is 56502317. The next prime is 56502349. The reversal of 56502331 is 13320565.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56502331 is a prime.

It is a super-2 number, since 2×56502331² = 6385026816867122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56502296 and 56502305.

It is not a weakly prime, because it can be changed into another prime (56502311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28251165 + 28251166.

It is an arithmetic number, because the mean of its divisors is an integer number (28251166).

Almost surely, 2^56502331 is an apocalyptic number.

56502331 is a deficient number, since it is larger than the sum of its proper divisors (1).

56502331 is an equidigital number, since it uses as much as digits as its factorization.

56502331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 56502331 is about 7516.8032434007. The cubic root of 56502331 is about 383.7267908877.

Adding to 56502331 its reverse (13320565), we get a palindrome (69822896).

The spelling of 56502331 in words is "fifty-six million, five hundred two thousand, three hundred thirty-one".