54171904 has 36 divisors (see below), whose sum is σ = 109936540. Its totient is φ = 26634240.

The previous prime is 54171899. The next prime is 54171919. The reversal of 54171904 is 40917145.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 52533504 = 1280^2 + 7248^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13882 + ... + 17350.

Almost surely, 2^54171904 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 54171904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54968270).

54171904 is an abundant number, since it is smaller than the sum of its proper divisors (55764636).

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

54171904 is an equidigital number, since it uses as much as digits as its factorization.

54171904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546 (or 3532 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 54171904 is about 7360.1565200748. The cubic root of 54171904 is about 378.3769743151.

The spelling of 54171904 in words is "fifty-four million, one hundred seventy-one thousand, nine hundred four".