55125215 has 8 divisors (see below), whose sum is σ = 66409200. Its totient is φ = 43927552.

The previous prime is 55125199. The next prime is 55125221. The reversal of 55125215 is 51252155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55125215 - 2⁴ = 55125199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20165 + ... + 22734.

It is an arithmetic number, because the mean of its divisors is an integer number (8301150).

Almost surely, 2^55125215 is an apocalyptic number.

55125215 is a deficient number, since it is larger than the sum of its proper divisors (11283985).

55125215 is a wasteful number, since it uses less digits than its factorization.

55125215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43161.

The product of its digits is 2500, while the sum is 26.

The square root of 55125215 is about 7424.6356812978. The cubic root of 55125215 is about 380.5836253372.

The spelling of 55125215 in words is "fifty-five million, one hundred twenty-five thousand, two hundred fifteen".