54129861 has 24 divisors (see below), whose sum is σ = 79724736. Its totient is φ = 35384640.

The previous prime is 54129847. The next prime is 54129869. The reversal of 54129861 is 16892145.

It is not a de Polignac number, because 54129861 - 2⁹ = 54129349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54129869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173896 + ... + 174206.

It is an arithmetic number, because the mean of its divisors is an integer number (3321864).

Almost surely, 2^54129861 is an apocalyptic number.

It is an amenable number.

54129861 is a deficient number, since it is larger than the sum of its proper divisors (25594875).

54129861 is a wasteful number, since it uses less digits than its factorization.

54129861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 630 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 54129861 is about 7357.2998443723. The cubic root of 54129861 is about 378.2790624261.

The spelling of 54129861 in words is "fifty-four million, one hundred twenty-nine thousand, eight hundred sixty-one".