56487569 has 4 divisors (see below), whose sum is σ = 57036096. Its totient is φ = 55939044.

The previous prime is 56487533. The next prime is 56487581. The reversal of 56487569 is 96578465.

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 a de Polignac number, because none of the positive numbers 2^k-56487569 is a prime.

It is a super-2 number, since 2×56487569² = 6381690903059522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56487469) 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, 274109 + ... + 274314.

It is an arithmetic number, because the mean of its divisors is an integer number (14259024).

Almost surely, 2^56487569 is an apocalyptic number.

It is an amenable number.

56487569 is a deficient number, since it is larger than the sum of its proper divisors (548527).

56487569 is a wasteful number, since it uses less digits than its factorization.

56487569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548526.

The product of its digits is 1814400, while the sum is 50.

The square root of 56487569 is about 7515.8212458786. The cubic root of 56487569 is about 383.6933700348.

The spelling of 56487569 in words is "fifty-six million, four hundred eighty-seven thousand, five hundred sixty-nine".