55589279 has 4 divisors (see below), whose sum is σ = 55676376. Its totient is φ = 55502184.

The previous prime is 55589273. The next prime is 55589299. The reversal of 55589279 is 97298555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97298555 = 5 ⋅19459711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55589279 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 (55589273) 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, 42584 + ... + 43869.

It is an arithmetic number, because the mean of its divisors is an integer number (13919094).

Almost surely, 2^55589279 is an apocalyptic number.

55589279 is a deficient number, since it is larger than the sum of its proper divisors (87097).

55589279 is an equidigital number, since it uses as much as digits as its factorization.

55589279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87096.

The product of its digits is 1134000, while the sum is 50.

The square root of 55589279 is about 7455.8218192229. The cubic root of 55589279 is about 381.6486059818.

The spelling of 55589279 in words is "fifty-five million, five hundred eighty-nine thousand, two hundred seventy-nine".