55899207 has 32 divisors (see below), whose sum is σ = 101928960. Its totient is φ = 29484000.

The previous prime is 55899203. The next prime is 55899229. The reversal of 55899207 is 70299855.

It is a happy number.

55899207 is a `hidden beast` number, since 558 + 9 + 92 + 0 + 7 = 666.

It is not a de Polignac number, because 55899207 - 2² = 55899203 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 31 ways as a sum of consecutive naturals, for example, 8919 + ... + 13832.

It is an arithmetic number, because the mean of its divisors is an integer number (3185280).

Almost surely, 2^55899207 is an apocalyptic number.

55899207 is a deficient number, since it is larger than the sum of its proper divisors (46029753).

55899207 is a wasteful number, since it uses less digits than its factorization.

55899207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22780 (or 22774 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 55899207 is about 7476.5772249071. The cubic root of 55899207 is about 382.3565629039.

The spelling of 55899207 in words is "fifty-five million, eight hundred ninety-nine thousand, two hundred seven".