55899213 has 16 divisors (see below), whose sum is σ = 79081920. Its totient is φ = 35000576.

The previous prime is 55899203. The next prime is 55899229. The reversal of 55899213 is 31299855.

It is a cyclic number.

It is not a de Polignac number, because 55899213 - 2⁶ = 55899149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55899203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33718 + ... + 35336.

It is an arithmetic number, because the mean of its divisors is an integer number (4942620).

Almost surely, 2^55899213 is an apocalyptic number.

It is an amenable number.

55899213 is a deficient number, since it is larger than the sum of its proper divisors (23182707).

55899213 is a wasteful number, since it uses less digits than its factorization.

55899213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316.

The product of its digits is 97200, while the sum is 42.

The square root of 55899213 is about 7476.5776261602. The cubic root of 55899213 is about 382.3565765841.

The spelling of 55899213 in words is "fifty-five million, eight hundred ninety-nine thousand, two hundred thirteen".