56402520 has 32 divisors (see below), whose sum is σ = 169207920. Its totient is φ = 15040640.

The previous prime is 56402519. The next prime is 56402527. The reversal of 56402520 is 2520465.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56402527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234891 + ... + 235130.

Almost surely, 2^56402520 is an apocalyptic number.

It is an amenable number.

56402520 is an abundant number, since it is smaller than the sum of its proper divisors (112805400).

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

56402520 is a wasteful number, since it uses less digits than its factorization.

56402520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470035 (or 470031 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 56402520 is about 7510.1611167804. The cubic root of 56402520 is about 383.5007074174.

Adding to 56402520 its reverse (2520465), we get a palindrome (58922985).

The spelling of 56402520 in words is "fifty-six million, four hundred two thousand, five hundred twenty".