54561015 has 24 divisors (see below), whose sum is σ = 95910048. Its totient is φ = 28687680.

The previous prime is 54560999. The next prime is 54561029. The reversal of 54561015 is 51016545.

It is a happy number.

54561015 is a `hidden beast` number, since 5 + 45 + 610 + 1 + 5 = 666.

It is not a de Polignac number, because 54561015 - 2⁴ = 54560999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54561015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5344 + ... + 11733.

It is an arithmetic number, because the mean of its divisors is an integer number (3996252).

Almost surely, 2^54561015 is an apocalyptic number.

54561015 is a deficient number, since it is larger than the sum of its proper divisors (41349033).

54561015 is a wasteful number, since it uses less digits than its factorization.

54561015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17159 (or 17156 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 54561015 is about 7386.5428313928. The cubic root of 54561015 is about 379.2807609524.

The spelling of 54561015 in words is "fifty-four million, five hundred sixty-one thousand, fifteen".