55838587 has 24 divisors (see below), whose sum is σ = 70265040. Its totient is φ = 44089920.

The previous prime is 55838581. The next prime is 55838609. The reversal of 55838587 is 78583855.

It is not a de Polignac number, because 55838587 - 2⁷ = 55838459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 55838587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55838581) 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, 33637 + ... + 35257.

It is an arithmetic number, because the mean of its divisors is an integer number (2927710).

Almost surely, 2^55838587 is an apocalyptic number.

55838587 is a deficient number, since it is larger than the sum of its proper divisors (14426453).

55838587 is a wasteful number, since it uses less digits than its factorization.

55838587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 1684 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 49.

The square root of 55838587 is about 7472.5221311148. The cubic root of 55838587 is about 382.2182971467.

The spelling of 55838587 in words is "fifty-five million, eight hundred thirty-eight thousand, five hundred eighty-seven".