54421217 has 2 divisors, whose sum is σ = 54421218. Its totient is φ = 54421216.

The previous prime is 54421201. The next prime is 54421231. The reversal of 54421217 is 71212445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54228496 + 192721 = 7364^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 54421217 - 2⁴ = 54421201 is a prime.

It is a super-2 number, since 2×54421217² = 5923337719522178, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 9.

It is not a weakly prime, because it can be changed into another prime (54421247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27210608 + 27210609.

It is an arithmetic number, because the mean of its divisors is an integer number (27210609).

Almost surely, 2^54421217 is an apocalyptic number.

It is an amenable number.

54421217 is a deficient number, since it is larger than the sum of its proper divisors (1).

54421217 is an equidigital number, since it uses as much as digits as its factorization.

54421217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 26.

The square root of 54421217 is about 7377.0737423453. The cubic root of 54421217 is about 378.9565487417.

The spelling of 54421217 in words is "fifty-four million, four hundred twenty-one thousand, two hundred seventeen".