54531515 has 8 divisors (see below), whose sum is σ = 66830400. Its totient is φ = 42696832.

The previous prime is 54531497. The next prime is 54531527. The reversal of 54531515 is 51513545.

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 54531515 - 2⁸ = 54531259 is a prime.

It is a super-2 number, since 2×54531515² = 5947372256390450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115790 + ... + 116259.

It is an arithmetic number, because the mean of its divisors is an integer number (8353800).

Almost surely, 2^54531515 is an apocalyptic number.

54531515 is a deficient number, since it is larger than the sum of its proper divisors (12298885).

54531515 is a wasteful number, since it uses less digits than its factorization.

54531515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232101.

The product of its digits is 7500, while the sum is 29.

The square root of 54531515 is about 7384.5456867704. The cubic root of 54531515 is about 379.2123922367.

The spelling of 54531515 in words is "fifty-four million, five hundred thirty-one thousand, five hundred fifteen".