55156544 has 56 divisors (see below), whose sum is σ = 117104160. Its totient is φ = 25698816.

The previous prime is 55156531. The next prime is 55156561. The reversal of 55156544 is 44565155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81134 + ... + 81810.

Almost surely, 2^55156544 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 55156544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58552080).

55156544 is an abundant number, since it is smaller than the sum of its proper divisors (61947616).

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

55156544 is a wasteful number, since it uses less digits than its factorization.

55156544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 765 counting only the distinct ones).

The product of its digits is 60000, while the sum is 35.

The square root of 55156544 is about 7426.7451821104. The cubic root of 55156544 is about 380.6557099924.

The spelling of 55156544 in words is "fifty-five million, one hundred fifty-six thousand, five hundred forty-four".