53012591 has 2 divisors, whose sum is σ = 53012592. Its totient is φ = 53012590.

The previous prime is 53012587. The next prime is 53012633. The reversal of 53012591 is 19521035.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53012591 - 2² = 53012587 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 53012591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53012501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26506295 + 26506296.

It is an arithmetic number, because the mean of its divisors is an integer number (26506296).

Almost surely, 2^53012591 is an apocalyptic number.

53012591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53012591 is an equidigital number, since it uses as much as digits as its factorization.

53012591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 53012591 is about 7280.9745913579. The cubic root of 53012591 is about 375.6583185977.

The spelling of 53012591 in words is "fifty-three million, twelve thousand, five hundred ninety-one".