56089261 has 4 divisors (see below), whose sum is σ = 57898624. Its totient is φ = 54279900.

The previous prime is 56089259. The next prime is 56089303. The reversal of 56089261 is 16298065.

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 56089261 - 2¹ = 56089259 is a prime.

It is a super-2 number, since 2×56089261² = 6292010399052242, which contains 22 as substring.

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 56089261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56089661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904635 + ... + 904696.

It is an arithmetic number, because the mean of its divisors is an integer number (14474656).

Almost surely, 2^56089261 is an apocalyptic number.

It is an amenable number.

56089261 is a deficient number, since it is larger than the sum of its proper divisors (1809363).

56089261 is a wasteful number, since it uses less digits than its factorization.

56089261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809362.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 56089261 is about 7489.2764002940. The cubic root of 56089261 is about 382.7894026359.

The spelling of 56089261 in words is "fifty-six million, eighty-nine thousand, two hundred sixty-one".