54958221 has 12 divisors (see below), whose sum is σ = 79873248. Its totient is φ = 36413064.

The previous prime is 54958213. The next prime is 54958223. The reversal of 54958221 is 12285945.

54958221 is a `hidden beast` number, since 54 + 9 + 582 + 21 = 666.

It is not a de Polignac number, because 54958221 - 2³ = 54958213 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54958223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17265 + ... + 20198.

It is an arithmetic number, because the mean of its divisors is an integer number (6656104).

Almost surely, 2^54958221 is an apocalyptic number.

It is an amenable number.

54958221 is a deficient number, since it is larger than the sum of its proper divisors (24915027).

54958221 is a wasteful number, since it uses less digits than its factorization.

54958221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37632 (or 37629 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 54958221 is about 7413.3812123754. The cubic root of 54958221 is about 380.1989286227.

The spelling of 54958221 in words is "fifty-four million, nine hundred fifty-eight thousand, two hundred twenty-one".