54981372 has 12 divisors (see below), whose sum is σ = 128289896. Its totient is φ = 18327120.

The previous prime is 54981359. The next prime is 54981373. The reversal of 54981372 is 27318945.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 54981372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54981373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2290879 + ... + 2290902.

Almost surely, 2^54981372 is an apocalyptic number.

It is an amenable number.

54981372 is an abundant number, since it is smaller than the sum of its proper divisors (73308524).

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

54981372 is a wasteful number, since it uses less digits than its factorization.

54981372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581788 (or 4581786 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 54981372 is about 7414.9424812334. The cubic root of 54981372 is about 380.2523070472.

The spelling of 54981372 in words is "fifty-four million, nine hundred eighty-one thousand, three hundred seventy-two".