56505424 has 20 divisors (see below), whose sum is σ = 110451636. Its totient is φ = 28001792.

The previous prime is 56505413. The next prime is 56505437. The reversal of 56505424 is 42450565.

It can be written as a sum of positive squares in 2 ways, for example, as 13838400 + 42667024 = 3720^2 + 6532^2 .

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, 13819 + ... + 17434.

Almost surely, 2^56505424 is an apocalyptic number.

It is an amenable number.

56505424 is a deficient number, since it is larger than the sum of its proper divisors (53946212).

56505424 is a wasteful number, since it uses less digits than its factorization.

56505424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31374 (or 31368 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 56505424 is about 7517.0089796408. The cubic root of 56505424 is about 383.7337926360.

Adding to 56505424 its reverse (42450565), we get a palindrome (98955989).

The spelling of 56505424 in words is "fifty-six million, five hundred five thousand, four hundred twenty-four".