54139692 has 24 divisors (see below), whose sum is σ = 126460656. Its totient is φ = 18027328.

The previous prime is 54139681. The next prime is 54139693. The reversal of 54139692 is 29693145.

54139692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×54139692² = 5862212499709728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54139692.

It is not an unprimeable number, because it can be changed into a prime (54139693) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13558 + ... + 17090.

It is an arithmetic number, because the mean of its divisors is an integer number (5269194).

Almost surely, 2^54139692 is an apocalyptic number.

It is an amenable number.

54139692 is an abundant number, since it is smaller than the sum of its proper divisors (72320964).

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

54139692 is a wasteful number, since it uses less digits than its factorization.

54139692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4815 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 54139692 is about 7357.9679259970. The cubic root of 54139692 is about 378.3019619020.

The spelling of 54139692 in words is "fifty-four million, one hundred thirty-nine thousand, six hundred ninety-two".