56213087 has 4 divisors (see below), whose sum is σ = 64243536. Its totient is φ = 48182640.

The previous prime is 56213057. The next prime is 56213089. The reversal of 56213087 is 78031265.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56213087 is a prime.

It is a super-2 number, since 2×56213087² = 6319822300139138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56213089) 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, 4015214 + ... + 4015227.

It is an arithmetic number, because the mean of its divisors is an integer number (16060884).

Almost surely, 2^56213087 is an apocalyptic number.

56213087 is a deficient number, since it is larger than the sum of its proper divisors (8030449).

56213087 is an equidigital number, since it uses as much as digits as its factorization.

56213087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030448.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 56213087 is about 7497.5387294765. The cubic root of 56213087 is about 383.0708851749.

The spelling of 56213087 in words is "fifty-six million, two hundred thirteen thousand, eighty-seven".