54221897 has 2 divisors, whose sum is σ = 54221898. Its totient is φ = 54221896.

The previous prime is 54221837. The next prime is 54221903. The reversal of 54221897 is 79812245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27709696 + 26512201 = 5264^2 + 5149^2 .

It is a cyclic number.

It is not a de Polignac number, because 54221897 - 2⁸ = 54221641 is a prime.

It is a super-2 number, since 2×54221897² = 5880028228557218, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54221897.

It is not a weakly prime, because it can be changed into another prime (54221837) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27110948 + 27110949.

It is an arithmetic number, because the mean of its divisors is an integer number (27110949).

Almost surely, 2^54221897 is an apocalyptic number.

It is an amenable number.

54221897 is a deficient number, since it is larger than the sum of its proper divisors (1).

54221897 is an equidigital number, since it uses as much as digits as its factorization.

54221897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 54221897 is about 7363.5519282477. The cubic root of 54221897 is about 378.4933346585.

The spelling of 54221897 in words is "fifty-four million, two hundred twenty-one thousand, eight hundred ninety-seven".