55199625 has 64 divisors (see below), whose sum is σ = 100988160. Its totient is φ = 26769600.

The previous prime is 55199603. The next prime is 55199681. The reversal of 55199625 is 52699155.

It is not a de Polignac number, because 55199625 - 2⁷ = 55199497 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 823842 + ... + 823908.

It is an arithmetic number, because the mean of its divisors is an integer number (1577940).

Almost surely, 2^55199625 is an apocalyptic number.

It is an amenable number.

55199625 is a deficient number, since it is larger than the sum of its proper divisors (45788535).

55199625 is an equidigital number, since it uses as much as digits as its factorization.

55199625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 88 counting only the distinct ones).

The product of its digits is 121500, while the sum is 42.

The square root of 55199625 is about 7429.6450117082. The cubic root of 55199625 is about 380.7547901723.

The spelling of 55199625 in words is "fifty-five million, one hundred ninety-nine thousand, six hundred twenty-five".