56532557 has 4 divisors (see below), whose sum is σ = 56775420. Its totient is φ = 56289696.

The previous prime is 56532529. The next prime is 56532569. The reversal of 56532557 is 75523565.

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 9897316 + 46635241 = 3146^2 + 6829^2 .

It is a cyclic number.

It is not a de Polignac number, because 56532557 - 2²⁴ = 39755341 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 56532557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56532257) 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, 121082 + ... + 121547.

It is an arithmetic number, because the mean of its divisors is an integer number (14193855).

Almost surely, 2^56532557 is an apocalyptic number.

It is an amenable number.

56532557 is a deficient number, since it is larger than the sum of its proper divisors (242863).

56532557 is a wasteful number, since it uses less digits than its factorization.

56532557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242862.

The product of its digits is 157500, while the sum is 38.

The square root of 56532557 is about 7518.8135367224. The cubic root of 56532557 is about 383.7952037489.

The spelling of 56532557 in words is "fifty-six million, five hundred thirty-two thousand, five hundred fifty-seven".