54387972 has 18 divisors (see below), whose sum is σ = 137480798. Its totient is φ = 18129312.

The previous prime is 54387967. The next prime is 54388001. The reversal of 54387972 is 27978345.

54387972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 40144896 + 14243076 = 6336^2 + 3774^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 755353 + ... + 755424.

Almost surely, 2^54387972 is an apocalyptic number.

It is an amenable number.

54387972 is an abundant number, since it is smaller than the sum of its proper divisors (83092826).

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

54387972 is a wasteful number, since it uses less digits than its factorization.

54387972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510787 (or 1510782 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 54387972 is about 7374.8201333999. The cubic root of 54387972 is about 378.8793669768.

The spelling of 54387972 in words is "fifty-four million, three hundred eighty-seven thousand, nine hundred seventy-two".