56290905 has 24 divisors (see below), whose sum is σ = 106441920. Its totient is φ = 27292320.

The previous prime is 56290891. The next prime is 56290919. The reversal of 56290905 is 50909265.

56290905 is a `hidden beast` number, since 562 + 9 + 0 + 90 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (56290891) and next prime (56290919).

It is not a de Polignac number, because 56290905 - 2⁴ = 56290889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56290905.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56365 + ... + 57354.

It is an arithmetic number, because the mean of its divisors is an integer number (4435080).

Almost surely, 2^56290905 is an apocalyptic number.

56290905 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56290905 is a deficient number, since it is larger than the sum of its proper divisors (50151015).

56290905 is a wasteful number, since it uses less digits than its factorization.

56290905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113741 (or 113738 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 56290905 is about 7502.7265044116. The cubic root of 56290905 is about 383.2475703958.

The spelling of 56290905 in words is "fifty-six million, two hundred ninety thousand, nine hundred five".