54508581 has 12 divisors (see below), whose sum is σ = 78815308. Its totient is φ = 36301824.

The previous prime is 54508567. The next prime is 54508607. The reversal of 54508581 is 18580545.

It can be written as a sum of positive squares in 2 ways, for example, as 8946081 + 45562500 = 2991^2 + 6750^2 .

It is not a de Polignac number, because 54508581 - 2¹¹ = 54506533 is a prime.

It is a super-2 number, since 2×54508581² = 5942370805267122, 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 (54508541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8421 + ... + 13413.

Almost surely, 2^54508581 is an apocalyptic number.

It is an amenable number.

54508581 is a deficient number, since it is larger than the sum of its proper divisors (24306727).

54508581 is a wasteful number, since it uses less digits than its factorization.

54508581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6212 (or 6209 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 54508581 is about 7382.9926858964. The cubic root of 54508581 is about 379.1592237372.

Subtracting from 54508581 its reverse (18580545), we obtain a square (35928036 = 5994²).

The spelling of 54508581 in words is "fifty-four million, five hundred eight thousand, five hundred eighty-one".