53552591 has 2 divisors, whose sum is σ = 53552592. Its totient is φ = 53552590.

The previous prime is 53552561. The next prime is 53552617. The reversal of 53552591 is 19525535.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53552591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53552561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26776295 + 26776296.

It is an arithmetic number, because the mean of its divisors is an integer number (26776296).

Almost surely, 2^53552591 is an apocalyptic number.

53552591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53552591 is an equidigital number, since it uses as much as digits as its factorization.

53552591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33750, while the sum is 35.

The square root of 53552591 is about 7317.9635828555. The cubic root of 53552591 is about 376.9295297083.

The spelling of 53552591 in words is "fifty-three million, five hundred fifty-two thousand, five hundred ninety-one".