55338657 has 16 divisors (see below), whose sum is σ = 80644032. Its totient is φ = 33475520.

The previous prime is 55338649. The next prime is 55338671. The reversal of 55338657 is 75683355.

It is a cyclic number.

It is not a de Polignac number, because 55338657 - 2³ = 55338649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55338677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21103 + ... + 23579.

It is an arithmetic number, because the mean of its divisors is an integer number (5040252).

Almost surely, 2^55338657 is an apocalyptic number.

It is an amenable number.

55338657 is a deficient number, since it is larger than the sum of its proper divisors (25305375).

55338657 is a wasteful number, since it uses less digits than its factorization.

55338657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168.

The product of its digits is 378000, while the sum is 42.

The square root of 55338657 is about 7438.9956983453. The cubic root of 55338657 is about 381.0741928109.

The spelling of 55338657 in words is "fifty-five million, three hundred thirty-eight thousand, six hundred fifty-seven".