54628581 has 16 divisors (see below), whose sum is σ = 84944000. Its totient is φ = 31215744.

The previous prime is 54628559. The next prime is 54628589. The reversal of 54628581 is 18582645.

It is not a de Polignac number, because 54628581 - 2⁵ = 54628549 is a prime.

It is a super-2 number, since 2×54628581² = 5968563724147122, 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 (54628589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25516 + ... + 27573.

It is an arithmetic number, because the mean of its divisors is an integer number (5309000).

Almost surely, 2^54628581 is an apocalyptic number.

It is an amenable number.

54628581 is a deficient number, since it is larger than the sum of its proper divisors (30315419).

54628581 is an equidigital number, since it uses as much as digits as its factorization.

54628581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53113 (or 53099 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 54628581 is about 7391.1150038408. The cubic root of 54628581 is about 379.4372579978.

The spelling of 54628581 in words is "fifty-four million, six hundred twenty-eight thousand, five hundred eighty-one".