56216455 has 4 divisors (see below), whose sum is σ = 67459752. Its totient is φ = 44973160.

The previous prime is 56216449. The next prime is 56216477. The reversal of 56216455 is 55461265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55461265 = 5 ⋅11092253.

It is not a de Polignac number, because 56216455 - 2⁷ = 56216327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56216455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5621641 + ... + 5621650.

It is an arithmetic number, because the mean of its divisors is an integer number (16864938).

Almost surely, 2^56216455 is an apocalyptic number.

56216455 is a deficient number, since it is larger than the sum of its proper divisors (11243297).

56216455 is a wasteful number, since it uses less digits than its factorization.

56216455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11243296.

The product of its digits is 36000, while the sum is 34.

The square root of 56216455 is about 7497.7633331548. The cubic root of 56216455 is about 383.0785355700.

The spelling of 56216455 in words is "fifty-six million, two hundred sixteen thousand, four hundred fifty-five".