54392639 has 16 divisors (see below), whose sum is σ = 66624768. Its totient is φ = 43343232.

The previous prime is 54392633. The next prime is 54392651. The reversal of 54392639 is 93629345.

It is a cyclic number.

It is not a de Polignac number, because 54392639 - 2²⁰ = 53344063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54392596 and 54392605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54392633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7124 + ... + 12630.

It is an arithmetic number, because the mean of its divisors is an integer number (4164048).

Almost surely, 2^54392639 is an apocalyptic number.

54392639 is a deficient number, since it is larger than the sum of its proper divisors (12232129).

54392639 is a wasteful number, since it uses less digits than its factorization.

54392639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614.

The product of its digits is 174960, while the sum is 41.

The square root of 54392639 is about 7375.1365411089. The cubic root of 54392639 is about 378.8902038057.

The spelling of 54392639 in words is "fifty-four million, three hundred ninety-two thousand, six hundred thirty-nine".