56671489 has 16 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 45713472.

The previous prime is 56671477. The next prime is 56671493. The reversal of 56671489 is 98417665.

It is not a de Polignac number, because 56671489 - 2¹⁵ = 56638721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56671409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 972 + ... + 10690.

It is an arithmetic number, because the mean of its divisors is an integer number (4374000).

Almost surely, 2^56671489 is an apocalyptic number.

It is an amenable number.

56671489 is a deficient number, since it is larger than the sum of its proper divisors (13312511).

56671489 is an equidigital number, since it uses as much as digits as its factorization.

56671489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9757 (or 9743 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 56671489 is about 7528.0468250403. The cubic root of 56671489 is about 384.1093461207.

The spelling of 56671489 in words is "fifty-six million, six hundred seventy-one thousand, four hundred eighty-nine".