56872489 has 4 divisors (see below), whose sum is σ = 57249280. Its totient is φ = 56495700.

The previous prime is 56872477. The next prime is 56872511. The reversal of 56872489 is 98427865.

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 56872489 - 2²¹ = 54775337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56873489) 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, 188169 + ... + 188470.

It is an arithmetic number, because the mean of its divisors is an integer number (14312320).

Almost surely, 2^56872489 is an apocalyptic number.

It is an amenable number.

56872489 is a deficient number, since it is larger than the sum of its proper divisors (376791).

56872489 is a wasteful number, since it uses less digits than its factorization.

56872489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376790.

The product of its digits is 967680, while the sum is 49.

The square root of 56872489 is about 7541.3850849827. The cubic root of 56872489 is about 384.5629244685.

The spelling of 56872489 in words is "fifty-six million, eight hundred seventy-two thousand, four hundred eighty-nine".