56215455 has 16 divisors (see below), whose sum is σ = 90271584. Its totient is φ = 29872640.

The previous prime is 56215441. The next prime is 56215459. The reversal of 56215455 is 55451265.

It is not a de Polignac number, because 56215455 - 2⁶ = 56215391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56215459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2454 + ... + 10883.

It is an arithmetic number, because the mean of its divisors is an integer number (5641974).

Almost surely, 2^56215455 is an apocalyptic number.

56215455 is a deficient number, since it is larger than the sum of its proper divisors (34056129).

56215455 is a wasteful number, since it uses less digits than its factorization.

56215455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13626.

The product of its digits is 30000, while the sum is 33.

The square root of 56215455 is about 7497.6966463041. The cubic root of 56215455 is about 383.0762641069.

The spelling of 56215455 in words is "fifty-six million, two hundred fifteen thousand, four hundred fifty-five".