54922221 has 12 divisors (see below), whose sum is σ = 79737372. Its totient is φ = 36427776.

The previous prime is 54922199. The next prime is 54922237. The reversal of 54922221 is 12222945.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54597321 + 324900 = 7389^2 + 570^2 .

It is not a de Polignac number, because 54922221 - 2¹⁵ = 54889453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54922261) 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, 13716 + ... + 17261.

It is an arithmetic number, because the mean of its divisors is an integer number (6644781).

Almost surely, 2^54922221 is an apocalyptic number.

It is an amenable number.

54922221 is a deficient number, since it is larger than the sum of its proper divisors (24815151).

54922221 is a wasteful number, since it uses less digits than its factorization.

54922221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31180 (or 31177 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 54922221 is about 7410.9527727547. The cubic root of 54922221 is about 380.1158949362.

The spelling of 54922221 in words is "fifty-four million, nine hundred twenty-two thousand, two hundred twenty-one".