55466172 has 36 divisors (see below), whose sum is σ = 148455216. Its totient is φ = 17400960.

The previous prime is 55466171. The next prime is 55466227. The reversal of 55466172 is 27166455.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55466171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44704 + ... + 45927.

It is an arithmetic number, because the mean of its divisors is an integer number (4123756).

Almost surely, 2^55466172 is an apocalyptic number.

It is an amenable number.

55466172 is an abundant number, since it is smaller than the sum of its proper divisors (92989044).

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

55466172 is a wasteful number, since it uses less digits than its factorization.

55466172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90658 (or 90653 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 55466172 is about 7447.5614801088. The cubic root of 55466172 is about 381.3666670808.

The spelling of 55466172 in words is "fifty-five million, four hundred sixty-six thousand, one hundred seventy-two".