54120639 has 8 divisors (see below), whose sum is σ = 76405680. Its totient is φ = 33958016.

The previous prime is 54120631. The next prime is 54120653. The reversal of 54120639 is 93602145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54120639 - 2³ = 54120631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54120631) 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, 530544 + ... + 530645.

It is an arithmetic number, because the mean of its divisors is an integer number (9550710).

Almost surely, 2^54120639 is an apocalyptic number.

54120639 is a deficient number, since it is larger than the sum of its proper divisors (22285041).

54120639 is a wasteful number, since it uses less digits than its factorization.

54120639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061209.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 54120639 is about 7356.6730931855. The cubic root of 54120639 is about 378.2575789813.

The spelling of 54120639 in words is "fifty-four million, one hundred twenty thousand, six hundred thirty-nine".