54395221 has 2 divisors, whose sum is σ = 54395222. Its totient is φ = 54395220.

The previous prime is 54395191. The next prime is 54395273. The reversal of 54395221 is 12259345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50339025 + 4056196 = 7095^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 54395221 - 2⁷ = 54395093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54395921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27197610 + 27197611.

It is an arithmetic number, because the mean of its divisors is an integer number (27197611).

Almost surely, 2^54395221 is an apocalyptic number.

It is an amenable number.

54395221 is a deficient number, since it is larger than the sum of its proper divisors (1).

54395221 is an equidigital number, since it uses as much as digits as its factorization.

54395221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 54395221 is about 7375.3115866382. The cubic root of 54395221 is about 378.8961989737.

The spelling of 54395221 in words is "fifty-four million, three hundred ninety-five thousand, two hundred twenty-one".