56502311 has 2 divisors, whose sum is σ = 56502312. Its totient is φ = 56502310.

The previous prime is 56502289. The next prime is 56502317. The reversal of 56502311 is 11320565.

56502311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56502311 - 2⁶ = 56502247 is a prime.

It is a super-2 number, since 2×56502311² = 6385022296681442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56502317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28251155 + 28251156.

It is an arithmetic number, because the mean of its divisors is an integer number (28251156).

Almost surely, 2^56502311 is an apocalyptic number.

56502311 is a deficient number, since it is larger than the sum of its proper divisors (1).

56502311 is an equidigital number, since it uses as much as digits as its factorization.

56502311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 56502311 is about 7516.8019130479. The cubic root of 56502311 is about 383.7267456121.

Adding to 56502311 its reverse (11320565), we get a palindrome (67822876).

The spelling of 56502311 in words is "fifty-six million, five hundred two thousand, three hundred eleven".