56420511 has 12 divisors (see below), whose sum is σ = 87509592. Its totient is φ = 32240208.

The previous prime is 56420509. The next prime is 56420513. The reversal of 56420511 is 11502465.

It is an interprime number because it is at equal distance from previous prime (56420509) and next prime (56420513).

It is not a de Polignac number, because 56420511 - 2¹ = 56420509 is a prime.

It is a super-2 number, since 2×56420511² = 6366548123002242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191760 + ... + 192053.

It is an arithmetic number, because the mean of its divisors is an integer number (7292466).

Almost surely, 2^56420511 is an apocalyptic number.

56420511 is a deficient number, since it is larger than the sum of its proper divisors (31089081).

56420511 is a wasteful number, since it uses less digits than its factorization.

56420511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383830 (or 383823 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 56420511 is about 7511.3587985131. The cubic root of 56420511 is about 383.5414788095.

Adding to 56420511 its reverse (11502465), we get a palindrome (67922976).

The spelling of 56420511 in words is "fifty-six million, four hundred twenty thousand, five hundred eleven".