54361521 has 12 divisors (see below), whose sum is σ = 78699972. Its totient is φ = 36158976.

The previous prime is 54361513. The next prime is 54361523. The reversal of 54361521 is 12516345.

54361521 is a `hidden beast` number, since 5 + 43 + 615 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35569296 + 18792225 = 5964^2 + 4335^2 .

It is not a de Polignac number, because 54361521 - 2³ = 54361513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54361523) 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 11 ways as a sum of consecutive naturals, for example, 2496 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (6558331).

Almost surely, 2^54361521 is an apocalyptic number.

It is an amenable number.

54361521 is a deficient number, since it is larger than the sum of its proper divisors (24338451).

54361521 is a wasteful number, since it uses less digits than its factorization.

54361521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13680 (or 13677 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 54361521 is about 7373.0265834323. The cubic root of 54361521 is about 378.8179357274.

Adding to 54361521 its reverse (12516345), we get a palindrome (66877866).

The spelling of 54361521 in words is "fifty-four million, three hundred sixty-one thousand, five hundred twenty-one".