54903621 has 4 divisors (see below), whose sum is σ = 73204832. Its totient is φ = 36602412.

The previous prime is 54903613. The next prime is 54903623. The reversal of 54903621 is 12630945.

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 54903621 - 2³ = 54903613 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 (54903623) 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, 9150601 + ... + 9150606.

It is an arithmetic number, because the mean of its divisors is an integer number (18301208).

Almost surely, 2^54903621 is an apocalyptic number.

It is an amenable number.

54903621 is a deficient number, since it is larger than the sum of its proper divisors (18301211).

54903621 is a wasteful number, since it uses less digits than its factorization.

54903621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18301210.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 54903621 is about 7409.6977671157. The cubic root of 54903621 is about 380.0729799813.

The spelling of 54903621 in words is "fifty-four million, nine hundred three thousand, six hundred twenty-one".