56522261 has 4 divisors (see below), whose sum is σ = 57022572. Its totient is φ = 56021952.

The previous prime is 56522243. The next prime is 56522281. The reversal of 56522261 is 16222565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6027025 + 50495236 = 2455^2 + 7106^2 .

It is a cyclic number.

It is not a de Polignac number, because 56522261 - 2¹⁴ = 56505877 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 (56522281) 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, 249986 + ... + 250211.

It is an arithmetic number, because the mean of its divisors is an integer number (14255643).

Almost surely, 2^56522261 is an apocalyptic number.

It is an amenable number.

56522261 is a deficient number, since it is larger than the sum of its proper divisors (500311).

56522261 is a wasteful number, since it uses less digits than its factorization.

56522261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500310.

The product of its digits is 7200, while the sum is 29.

The square root of 56522261 is about 7518.1288230517. The cubic root of 56522261 is about 383.7719027488.

The spelling of 56522261 in words is "fifty-six million, five hundred twenty-two thousand, two hundred sixty-one".