55475252 has 36 divisors (see below), whose sum is σ = 113379840. Its totient is φ = 23680944.

The previous prime is 55475243. The next prime is 55475261. The reversal of 55475252 is 25257455.

It is an interprime number because it is at equal distance from previous prime (55475243) and next prime (55475261).

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, 74699 + ... + 75437.

It is an arithmetic number, because the mean of its divisors is an integer number (3149440).

Almost surely, 2^55475252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55475252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56689920).

55475252 is an abundant number, since it is smaller than the sum of its proper divisors (57904588).

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

55475252 is a wasteful number, since it uses less digits than its factorization.

55475252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1131 counting only the distinct ones).

The product of its digits is 70000, while the sum is 35.

The square root of 55475252 is about 7448.1710506674. The cubic root of 55475252 is about 381.3874762832.

The spelling of 55475252 in words is "fifty-five million, four hundred seventy-five thousand, two hundred fifty-two".