56556490 has 8 divisors (see below), whose sum is σ = 101801700. Its totient is φ = 22622592.

The previous prime is 56556473. The next prime is 56556491. The reversal of 56556490 is 9465565.

It can be written as a sum of positive squares in 2 ways, for example, as 56235001 + 321489 = 7499^2 + 567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×56556490² = 6397273122240200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56556491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2827815 + ... + 2827834.

Almost surely, 2^56556490 is an apocalyptic number.

56556490 is a deficient number, since it is larger than the sum of its proper divisors (45245210).

56556490 is a wasteful number, since it uses less digits than its factorization.

56556490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655656.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 56556490 is about 7520.4049093117. The cubic root of 56556490 is about 383.8493558764.

The spelling of 56556490 in words is "fifty-six million, five hundred fifty-six thousand, four hundred ninety".