55166672 has 40 divisors (see below), whose sum is σ = 117096672. Its totient is φ = 24969600.

The previous prime is 55166669. The next prime is 55166677. The reversal of 55166672 is 27666155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53522 + ... + 54542.

Almost surely, 2^55166672 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 55166672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58548336).

55166672 is an abundant number, since it is smaller than the sum of its proper divisors (61930000).

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

55166672 is a wasteful number, since it uses less digits than its factorization.

55166672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1341 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 55166672 is about 7427.4270107487. The cubic root of 55166672 is about 380.6790075911.

The spelling of 55166672 in words is "fifty-five million, one hundred sixty-six thousand, six hundred seventy-two".