56554191 has 6 divisors (see below), whose sum is σ = 81689400. Its totient is φ = 37702788.

The previous prime is 56554151. The next prime is 56554213. The reversal of 56554191 is 19145565.

56554191 is a `hidden beast` number, since 565 + 5 + 4 + 1 + 91 = 666.

It is not a de Polignac number, because 56554191 - 2⁷ = 56554063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56554151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3141891 + ... + 3141908.

It is an arithmetic number, because the mean of its divisors is an integer number (13614900).

Almost surely, 2^56554191 is an apocalyptic number.

56554191 is a deficient number, since it is larger than the sum of its proper divisors (25135209).

56554191 is a wasteful number, since it uses less digits than its factorization.

56554191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283805 (or 6283802 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 56554191 is about 7520.2520569460. The cubic root of 56554191 is about 383.8441546954.

It can be divided in two parts, 565 and 54191, that added together give a square (54756 = 234²).

The spelling of 56554191 in words is "fifty-six million, five hundred fifty-four thousand, one hundred ninety-one".