56426217 has 4 divisors (see below), whose sum is σ = 75234960. Its totient is φ = 37617476.

The previous prime is 56426197. The next prime is 56426297. The reversal of 56426217 is 71262465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56426217 - 2⁸ = 56425961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56426297) 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, 9404367 + ... + 9404372.

It is an arithmetic number, because the mean of its divisors is an integer number (18808740).

Almost surely, 2^56426217 is an apocalyptic number.

It is an amenable number.

56426217 is a deficient number, since it is larger than the sum of its proper divisors (18808743).

56426217 is a wasteful number, since it uses less digits than its factorization.

56426217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18808742.

The product of its digits is 20160, while the sum is 33.

The square root of 56426217 is about 7511.7386136633. The cubic root of 56426217 is about 383.5544079958.

The spelling of 56426217 in words is "fifty-six million, four hundred twenty-six thousand, two hundred seventeen".