56533861 has 4 divisors (see below), whose sum is σ = 56570400. Its totient is φ = 56497324.

The previous prime is 56533849. The next prime is 56533871. The reversal of 56533861 is 16833565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56533861 - 2⁷ = 56533733 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 56533861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56533811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15841 + ... + 19078.

It is an arithmetic number, because the mean of its divisors is an integer number (14142600).

Almost surely, 2^56533861 is an apocalyptic number.

It is an amenable number.

56533861 is a deficient number, since it is larger than the sum of its proper divisors (36539).

56533861 is a wasteful number, since it uses less digits than its factorization.

56533861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36538.

The product of its digits is 64800, while the sum is 37.

The square root of 56533861 is about 7518.9002520315. The cubic root of 56533861 is about 383.7981546449.

The spelling of 56533861 in words is "fifty-six million, five hundred thirty-three thousand, eight hundred sixty-one".