55438137 has 24 divisors (see below), whose sum is σ = 84601088. Its totient is φ = 34927200.

The previous prime is 55438133. The next prime is 55438147. The reversal of 55438137 is 73183455.

55438137 is a `hidden beast` number, since 5 + 543 + 81 + 37 = 666.

It is not a de Polignac number, because 55438137 - 2² = 55438133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55438133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9687 + ... + 14307.

Almost surely, 2^55438137 is an apocalyptic number.

It is an amenable number.

55438137 is a deficient number, since it is larger than the sum of its proper divisors (29162951).

55438137 is a wasteful number, since it uses less digits than its factorization.

55438137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701 (or 4698 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 55438137 is about 7445.6790825283. The cubic root of 55438137 is about 381.3024031883.

The spelling of 55438137 in words is "fifty-five million, four hundred thirty-eight thousand, one hundred thirty-seven".