54627521 has 4 divisors (see below), whose sum is σ = 58829652. Its totient is φ = 50425392.

The previous prime is 54627499. The next prime is 54627523. The reversal of 54627521 is 12572645.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12572645 = 5 ⋅2514529.

It can be written as a sum of positive squares in 2 ways, for example, as 25897921 + 28729600 = 5089^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 54627521 - 2¹⁰ = 54626497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54627523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2101046 + ... + 2101071.

It is an arithmetic number, because the mean of its divisors is an integer number (14707413).

Almost surely, 2^54627521 is an apocalyptic number.

It is an amenable number.

54627521 is a deficient number, since it is larger than the sum of its proper divisors (4202131).

54627521 is a wasteful number, since it uses less digits than its factorization.

54627521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202130.

The product of its digits is 16800, while the sum is 32.

The square root of 54627521 is about 7391.0432957736. The cubic root of 54627521 is about 379.4348038118.

The spelling of 54627521 in words is "fifty-four million, six hundred twenty-seven thousand, five hundred twenty-one".