55163736 has 24 divisors (see below), whose sum is σ = 149401980. Its totient is φ = 18387888.

The previous prime is 55163699. The next prime is 55163749. The reversal of 55163736 is 63736155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a self number, because there is not a number n which added to its sum of digits gives 55163736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 383010 + ... + 383153.

Almost surely, 2^55163736 is an apocalyptic number.

It is an amenable number.

55163736 is an abundant number, since it is smaller than the sum of its proper divisors (94238244).

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

55163736 is a wasteful number, since it uses less digits than its factorization.

55163736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766175 (or 766168 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 55163736 is about 7427.2293622858. The cubic root of 55163736 is about 380.6722541573.

The spelling of 55163736 in words is "fifty-five million, one hundred sixty-three thousand, seven hundred thirty-six".