56356191 has 6 divisors (see below), whose sum is σ = 81403400. Its totient is φ = 37570788.

The previous prime is 56356189. The next prime is 56356211. The reversal of 56356191 is 19165365.

56356191 is a `hidden beast` number, since 5 + 6 + 3 + 561 + 91 = 666.

It is not a de Polignac number, because 56356191 - 2¹ = 56356189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56356691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3130891 + ... + 3130908.

Almost surely, 2^56356191 is an apocalyptic number.

56356191 is a deficient number, since it is larger than the sum of its proper divisors (25047209).

56356191 is a wasteful number, since it uses less digits than its factorization.

56356191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261805 (or 6261802 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 56356191 is about 7507.0760619565. The cubic root of 56356191 is about 383.3956762288.

The spelling of 56356191 in words is "fifty-six million, three hundred fifty-six thousand, one hundred ninety-one".