56231217 has 12 divisors (see below), whose sum is σ = 92826240. Its totient is φ = 32132088.

The previous prime is 56231209. The next prime is 56231221. The reversal of 56231217 is 71213265.

It is a happy number.

It is not a de Polignac number, because 56231217 - 2³ = 56231209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56231207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 446217 + ... + 446342.

It is an arithmetic number, because the mean of its divisors is an integer number (7735520).

Almost surely, 2^56231217 is an apocalyptic number.

It is an amenable number.

56231217 is a deficient number, since it is larger than the sum of its proper divisors (36595023).

56231217 is a wasteful number, since it uses less digits than its factorization.

56231217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892572 (or 892569 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 56231217 is about 7498.7476954489. The cubic root of 56231217 is about 383.1120637746.

The spelling of 56231217 in words is "fifty-six million, two hundred thirty-one thousand, two hundred seventeen".