54621663 has 16 divisors (see below), whose sum is σ = 77262336. Its totient is φ = 34206080.

The previous prime is 54621643. The next prime is 54621667. The reversal of 54621663 is 36612645.

It is a cyclic number.

It is not a de Polignac number, because 54621663 - 2⁵ = 54621631 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54621667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48970 + ... + 50072.

It is an arithmetic number, because the mean of its divisors is an integer number (4828896).

Almost surely, 2^54621663 is an apocalyptic number.

54621663 is a deficient number, since it is larger than the sum of its proper divisors (22640673).

54621663 is a wasteful number, since it uses less digits than its factorization.

54621663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094.

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

The square root of 54621663 is about 7390.6469946819. The cubic root of 54621663 is about 379.4212403887.

The spelling of 54621663 in words is "fifty-four million, six hundred twenty-one thousand, six hundred sixty-three".