53257591 has 2 divisors, whose sum is σ = 53257592. Its totient is φ = 53257590.

The previous prime is 53257553. The next prime is 53257609. The reversal of 53257591 is 19575235.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53257591 - 2¹⁵ = 53224823 is a prime.

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 53257591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53057591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26628795 + 26628796.

It is an arithmetic number, because the mean of its divisors is an integer number (26628796).

Almost surely, 2^53257591 is an apocalyptic number.

53257591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53257591 is an equidigital number, since it uses as much as digits as its factorization.

53257591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 37.

The square root of 53257591 is about 7297.7798678776. The cubic root of 53257591 is about 376.2361364707.

The spelling of 53257591 in words is "fifty-three million, two hundred fifty-seven thousand, five hundred ninety-one".