55572489 has 12 divisors (see below), whose sum is σ = 91738816. Its totient is φ = 31755672.

The previous prime is 55572487. The next prime is 55572493. The reversal of 55572489 is 98427555.

It is not a de Polignac number, because 55572489 - 2¹ = 55572487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55572487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440989 + ... + 441114.

Almost surely, 2^55572489 is an apocalyptic number.

It is an amenable number.

55572489 is a deficient number, since it is larger than the sum of its proper divisors (36166327).

55572489 is a wasteful number, since it uses less digits than its factorization.

55572489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882116 (or 882113 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 55572489 is about 7454.6957684402. The cubic root of 55572489 is about 381.6101781563.

The spelling of 55572489 in words is "fifty-five million, five hundred seventy-two thousand, four hundred eighty-nine".