55078125 has 36 divisors (see below), whose sum is σ = 93749952. Its totient is φ = 28750000.

The previous prime is 55078109. The next prime is 55078151. The reversal of 55078125 is 52187055.

It is a happy number.

It is not a de Polignac number, because 55078125 - 2⁴ = 55078109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1171852 + ... + 1171898.

Almost surely, 2^55078125 is an apocalyptic number.

It is an amenable number.

55078125 is a deficient number, since it is larger than the sum of its proper divisors (38671827).

55078125 is an frugal number, since it uses more digits than its factorization.

55078125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 55078125 is about 7421.4638043987. The cubic root of 55078125 is about 380.4752249227.

The spelling of 55078125 in words is "fifty-five million, seventy-eight thousand, one hundred twenty-five".