56536291 has 8 divisors (see below), whose sum is σ = 64853504. Its totient is φ = 48279240.

The previous prime is 56536289. The next prime is 56536301. The reversal of 56536291 is 19263565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56536291 - 2¹ = 56536289 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 56536291.

It is not an unprimeable number, because it can be changed into a prime (56536211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13005 + ... + 16798.

It is an arithmetic number, because the mean of its divisors is an integer number (8106688).

Almost surely, 2^56536291 is an apocalyptic number.

56536291 is a deficient number, since it is larger than the sum of its proper divisors (8317213).

56536291 is a wasteful number, since it uses less digits than its factorization.

56536291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30081.

The product of its digits is 48600, while the sum is 37.

The square root of 56536291 is about 7519.0618430759. The cubic root of 56536291 is about 383.8036535096.

It can be divided in two parts, 565 and 36291, that added together give a triangular number (36856 = T₂₇₁).

The spelling of 56536291 in words is "fifty-six million, five hundred thirty-six thousand, two hundred ninety-one".