55438725 has 12 divisors (see below), whose sum is σ = 91658816. Its totient is φ = 29567280.

The previous prime is 55438711. The next prime is 55438759. The reversal of 55438725 is 52783455.

It is not a de Polignac number, because 55438725 - 2⁵ = 55438693 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 369517 + ... + 369666.

Almost surely, 2^55438725 is an apocalyptic number.

It is an amenable number.

55438725 is a deficient number, since it is larger than the sum of its proper divisors (36220091).

55438725 is a wasteful number, since it uses less digits than its factorization.

55438725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739196 (or 739191 counting only the distinct ones).

The product of its digits is 168000, while the sum is 39.

The square root of 55438725 is about 7445.7185684123. The cubic root of 55438725 is about 381.3037512676.

The spelling of 55438725 in words is "fifty-five million, four hundred thirty-eight thousand, seven hundred twenty-five".