53597591 has 2 divisors, whose sum is σ = 53597592. Its totient is φ = 53597590.

The previous prime is 53597581. The next prime is 53597603. The reversal of 53597591 is 19579535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53597591 - 2¹⁰ = 53596567 is a prime.

It is a super-2 number, since 2×53597591² = 5745403522006562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53597581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26798795 + 26798796.

It is an arithmetic number, because the mean of its divisors is an integer number (26798796).

Almost surely, 2^53597591 is an apocalyptic number.

53597591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53597591 is an equidigital number, since it uses as much as digits as its factorization.

53597591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 212625, while the sum is 44.

The square root of 53597591 is about 7321.0375630781. The cubic root of 53597591 is about 377.0350775430.

The spelling of 53597591 in words is "fifty-three million, five hundred ninety-seven thousand, five hundred ninety-one".