55902 has 32 divisors (see below), whose sum is σ = 140544. Its totient is φ = 14520.

The previous prime is 55901. The next prime is 55903. The reversal of 55902 is 20955.

It is an interprime number because it is at equal distance from previous prime (55901) and next prime (55903).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55901) 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, 5077 + ... + 5087.

It is an arithmetic number, because the mean of its divisors is an integer number (4392).

2⁵⁵⁹⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70272).

55902 is an abundant number, since it is smaller than the sum of its proper divisors (84642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55902 is a wasteful number, since it uses less digits than its factorization.

55902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 55902 is about 236.4360378623. The cubic root of 55902 is about 38.2362930938.

55902 divided by its sum of digits (21) gives a palindrome (2662).

The spelling of 55902 in words is "fifty-five thousand, nine hundred two".