55402115 has 16 divisors (see below), whose sum is σ = 69154560. Its totient is φ = 42562560.

The previous prime is 55402097. The next prime is 55402129. The reversal of 55402115 is 51120455.

It is a happy number.

It is not a de Polignac number, because 55402115 - 2⁸ = 55401859 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19931 + ... + 22539.

It is an arithmetic number, because the mean of its divisors is an integer number (4322160).

Almost surely, 2^55402115 is an apocalyptic number.

55402115 is a deficient number, since it is larger than the sum of its proper divisors (13752445).

55402115 is a wasteful number, since it uses less digits than its factorization.

55402115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 55402115 is about 7443.2597025766. The cubic root of 55402115 is about 381.2197990947.

The spelling of 55402115 in words is "fifty-five million, four hundred two thousand, one hundred fifteen".