55153164 has 48 divisors (see below), whose sum is σ = 140950656. Its totient is φ = 16646400.

The previous prime is 55153129. The next prime is 55153207. The reversal of 55153164 is 46135155.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 39844 + ... + 41204.

It is an arithmetic number, because the mean of its divisors is an integer number (2936472).

Almost surely, 2^55153164 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 55153164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70475328).

55153164 is an abundant number, since it is smaller than the sum of its proper divisors (85797492).

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

55153164 is a wasteful number, since it uses less digits than its factorization.

55153164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1684 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 55153164 is about 7426.5176226816. The cubic root of 55153164 is about 380.6479342902.

Subtracting from 55153164 its reverse (46135155), we obtain a square (9018009 = 3003²).

The spelling of 55153164 in words is "fifty-five million, one hundred fifty-three thousand, one hundred sixty-four".