55578589 has 4 divisors (see below), whose sum is σ = 60631200. Its totient is φ = 50525980.

The previous prime is 55578547. The next prime is 55578613. The reversal of 55578589 is 98587555.

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 55578589 - 2⁷ = 55578461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55578539) 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, 2526289 + ... + 2526310.

It is an arithmetic number, because the mean of its divisors is an integer number (15157800).

Almost surely, 2^55578589 is an apocalyptic number.

It is an amenable number.

55578589 is a deficient number, since it is larger than the sum of its proper divisors (5052611).

55578589 is a wasteful number, since it uses less digits than its factorization.

55578589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052610.

The product of its digits is 2520000, while the sum is 52.

The square root of 55578589 is about 7455.1048953050. The cubic root of 55578589 is about 381.6241403221.

The spelling of 55578589 in words is "fifty-five million, five hundred seventy-eight thousand, five hundred eighty-nine".