56406520 has 16 divisors (see below), whose sum is σ = 126914760. Its totient is φ = 22562592.

The previous prime is 56406499. The next prime is 56406547. The reversal of 56406520 is 2560465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705042 + ... + 705121.

Almost surely, 2^56406520 is an apocalyptic number.

It is an amenable number.

56406520 is an abundant number, since it is smaller than the sum of its proper divisors (70508240).

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

56406520 is a wasteful number, since it uses less digits than its factorization.

56406520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410174 (or 1410170 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 56406520 is about 7510.4274179304. The cubic root of 56406520 is about 383.5097730086.

Adding to 56406520 its reverse (2560465), we get a palindrome (58966985).

The spelling of 56406520 in words is "fifty-six million, four hundred six thousand, five hundred twenty".