55587243 has 4 divisors (see below), whose sum is σ = 74116328. Its totient is φ = 37058160.

The previous prime is 55587211. The next prime is 55587253. The reversal of 55587243 is 34278555.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55587243 - 2⁵ = 55587211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55587253) 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, 9264538 + ... + 9264543.

It is an arithmetic number, because the mean of its divisors is an integer number (18529082).

Almost surely, 2^55587243 is an apocalyptic number.

55587243 is a deficient number, since it is larger than the sum of its proper divisors (18529085).

55587243 is a wasteful number, since it uses less digits than its factorization.

55587243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18529084.

The product of its digits is 168000, while the sum is 39.

The square root of 55587243 is about 7455.6852803750. The cubic root of 55587243 is about 381.6439465339.

The spelling of 55587243 in words is "fifty-five million, five hundred eighty-seven thousand, two hundred forty-three".