5221591 has 2 divisors, whose sum is σ = 5221592. Its totient is φ = 5221590.

The previous prime is 5221583. The next prime is 5221597. The reversal of 5221591 is 1951225.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5221591 - 2³ = 5221583 is a prime.

It is equal to p₃₆₂₈₂₄ and since 5221591 and 362824 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5221597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610795 + 2610796.

It is an arithmetic number, because the mean of its divisors is an integer number (2610796).

Almost surely, 2^5221591 is an apocalyptic number.

5221591 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221591 is an equidigital number, since it uses as much as digits as its factorization.

5221591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 25.

The square root of 5221591 is about 2285.0800861239. The cubic root of 5221591 is about 173.4872716123.

The spelling of 5221591 in words is "five million, two hundred twenty-one thousand, five hundred ninety-one".