56215235 has 4 divisors (see below), whose sum is σ = 67458288. Its totient is φ = 44972184.

The previous prime is 56215231. The next prime is 56215241. The reversal of 56215235 is 53251265.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56215235 - 2² = 56215231 is a prime.

It is a super-2 number, since 2×56215235² = 6320305292210450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56215198 and 56215207.

It is not an unprimeable number, because it can be changed into a prime (56215231) 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, 5621519 + ... + 5621528.

It is an arithmetic number, because the mean of its divisors is an integer number (16864572).

Almost surely, 2^56215235 is an apocalyptic number.

56215235 is a deficient number, since it is larger than the sum of its proper divisors (11243053).

56215235 is a wasteful number, since it uses less digits than its factorization.

56215235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11243052.

The product of its digits is 9000, while the sum is 29.

The square root of 56215235 is about 7497.6819751174. The cubic root of 56215235 is about 383.0757643814.

The spelling of 56215235 in words is "fifty-six million, two hundred fifteen thousand, two hundred thirty-five".