54499621 has 4 divisors (see below), whose sum is σ = 59454144. Its totient is φ = 49545100.

The previous prime is 54499589. The next prime is 54499663. The reversal of 54499621 is 12699445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 54499621 - 2⁵ = 54499589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54499321) 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, 2477245 + ... + 2477266.

It is an arithmetic number, because the mean of its divisors is an integer number (14863536).

Almost surely, 2^54499621 is an apocalyptic number.

It is an amenable number.

54499621 is a deficient number, since it is larger than the sum of its proper divisors (4954523).

54499621 is a wasteful number, since it uses less digits than its factorization.

54499621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954522.

The product of its digits is 77760, while the sum is 40.

The square root of 54499621 is about 7382.3858609531. The cubic root of 54499621 is about 379.1384474806.

The spelling of 54499621 in words is "fifty-four million, four hundred ninety-nine thousand, six hundred twenty-one".