54366621 has 4 divisors (see below), whose sum is σ = 72488832. Its totient is φ = 36244412.

The previous prime is 54366569. The next prime is 54366643. The reversal of 54366621 is 12666345.

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 a cyclic number.

It is not a de Polignac number, because 54366621 - 2¹¹ = 54364573 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54366691) 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, 9061101 + ... + 9061106.

It is an arithmetic number, because the mean of its divisors is an integer number (18122208).

Almost surely, 2^54366621 is an apocalyptic number.

It is an amenable number.

54366621 is a deficient number, since it is larger than the sum of its proper divisors (18122211).

54366621 is a wasteful number, since it uses less digits than its factorization.

54366621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18122210.

The product of its digits is 25920, while the sum is 33.

The square root of 54366621 is about 7373.3724305775. The cubic root of 54366621 is about 378.8297817968.

The spelling of 54366621 in words is "fifty-four million, three hundred sixty-six thousand, six hundred twenty-one".