54523521 has 24 divisors (see below), whose sum is σ = 89281920. Its totient is φ = 31785696.

The previous prime is 54523519. The next prime is 54523523. The reversal of 54523521 is 12532545.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54523519) and next prime (54523523).

It is not a de Polignac number, because 54523521 - 2¹ = 54523519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54523523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10041 + ... + 14486.

It is an arithmetic number, because the mean of its divisors is an integer number (3720080).

Almost surely, 2^54523521 is an apocalyptic number.

It is an amenable number.

54523521 is a deficient number, since it is larger than the sum of its proper divisors (34758399).

54523521 is a wasteful number, since it uses less digits than its factorization.

54523521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24565 (or 24562 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 54523521 is about 7384.0044014071. The cubic root of 54523521 is about 379.1938612276.

The spelling of 54523521 in words is "fifty-four million, five hundred twenty-three thousand, five hundred twenty-one".