56216919 has 32 divisors (see below), whose sum is σ = 85155840. Its totient is φ = 32680800.

The previous prime is 56216917. The next prime is 56216921. The reversal of 56216919 is 91961265.

It is an interprime number because it is at equal distance from previous prime (56216917) and next prime (56216921).

It is not a de Polignac number, because 56216919 - 2¹ = 56216917 is a prime.

It is a super-2 number, since 2×56216919² = 6320683963705122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56216917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182964 + ... + 183270.

It is an arithmetic number, because the mean of its divisors is an integer number (2661120).

Almost surely, 2^56216919 is an apocalyptic number.

56216919 is a deficient number, since it is larger than the sum of its proper divisors (28938921).

56216919 is a wasteful number, since it uses less digits than its factorization.

56216919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

The product of its digits is 29160, while the sum is 39.

The square root of 56216919 is about 7497.7942756520. The cubic root of 56216919 is about 383.0795895197.

The spelling of 56216919 in words is "fifty-six million, two hundred sixteen thousand, nine hundred nineteen".