55537152 has 160 divisors (see below), whose sum is σ = 170881920. Its totient is φ = 15851520.

The previous prime is 55537129. The next prime is 55537169. The reversal of 55537152 is 25173555.

It is a super-2 number, since 2×55537152² = 6168750504542208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320938 + ... + 321110.

It is an arithmetic number, because the mean of its divisors is an integer number (1068012).

Almost surely, 2^55537152 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 55537152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85440960).

55537152 is an abundant number, since it is smaller than the sum of its proper divisors (115344768).

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

55537152 is a wasteful number, since it uses less digits than its factorization.

55537152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 208 counting only the distinct ones).

The product of its digits is 26250, while the sum is 33.

The square root of 55537152 is about 7452.3252747045. The cubic root of 55537152 is about 381.5292759068.

The spelling of 55537152 in words is "fifty-five million, five hundred thirty-seven thousand, one hundred fifty-two".