55159632 has 120 divisors (see below), whose sum is σ = 170614080. Its totient is φ = 16496640.

The previous prime is 55159627. The next prime is 55159649. The reversal of 55159632 is 23695155.

55159632 is a `hidden beast` number, since 5 + 5 + 15 + 9 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153469 + ... + 153827.

It is an arithmetic number, because the mean of its divisors is an integer number (1421784).

Almost surely, 2^55159632 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 55159632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85307040).

55159632 is an abundant number, since it is smaller than the sum of its proper divisors (115454448).

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

55159632 is a wasteful number, since it uses less digits than its factorization.

55159632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 472 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 55159632 is about 7426.9530764641. The cubic root of 55159632 is about 380.6628136698.

The spelling of 55159632 in words is "fifty-five million, one hundred fifty-nine thousand, six hundred thirty-two".