55586399 has 4 divisors (see below), whose sum is σ = 60639720. Its totient is φ = 50533080.

The previous prime is 55586389. The next prime is 55586431. The reversal of 55586399 is 99368555.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55586399 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 (55586329) 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, 2526644 + ... + 2526665.

It is an arithmetic number, because the mean of its divisors is an integer number (15159930).

Almost surely, 2^55586399 is an apocalyptic number.

55586399 is a deficient number, since it is larger than the sum of its proper divisors (5053321).

55586399 is a wasteful number, since it uses less digits than its factorization.

55586399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053320.

The product of its digits is 1458000, while the sum is 50.

The square root of 55586399 is about 7455.6286790585. The cubic root of 55586399 is about 381.6420149809.

The spelling of 55586399 in words is "fifty-five million, five hundred eighty-six thousand, three hundred ninety-nine".