54810513 has 20 divisors (see below), whose sum is σ = 83227188. Its totient is φ = 35938080.

The previous prime is 54810491. The next prime is 54810521. The reversal of 54810513 is 31501845.

54810513 is a `hidden beast` number, since 548 + 105 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20903184 + 33907329 = 4572^2 + 5823^2 .

It is not a de Polignac number, because 54810513 - 2⁸ = 54810257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54810583) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 606 + ... + 10487.

Almost surely, 2^54810513 is an apocalyptic number.

It is an amenable number.

54810513 is a deficient number, since it is larger than the sum of its proper divisors (28416675).

54810513 is a wasteful number, since it uses less digits than its factorization.

54810513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166 (or 11157 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 54810513 is about 7403.4122538192. The cubic root of 54810513 is about 379.8580102013.

The spelling of 54810513 in words is "fifty-four million, eight hundred ten thousand, five hundred thirteen".