54507815 has 8 divisors (see below), whose sum is σ = 68253408. Its totient is φ = 41710240.

The previous prime is 54507811. The next prime is 54507821. The reversal of 54507815 is 51870545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54507815 - 2² = 54507811 is a prime.

It is a super-2 number, since 2×54507815² = 5942203792148450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54507811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236876 + ... + 237105.

It is an arithmetic number, because the mean of its divisors is an integer number (8531676).

Almost surely, 2^54507815 is an apocalyptic number.

54507815 is a deficient number, since it is larger than the sum of its proper divisors (13745593).

54507815 is a wasteful number, since it uses less digits than its factorization.

54507815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474009.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 54507815 is about 7382.9408097316. The cubic root of 54507815 is about 379.1574476418.

The spelling of 54507815 in words is "fifty-four million, five hundred seven thousand, eight hundred fifteen".