53612591 has 2 divisors, whose sum is σ = 53612592. Its totient is φ = 53612590.

The previous prime is 53612569. The next prime is 53612641. The reversal of 53612591 is 19521635.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53612591 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 (53612551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26806295 + 26806296.

It is an arithmetic number, because the mean of its divisors is an integer number (26806296).

Almost surely, 2^53612591 is an apocalyptic number.

53612591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53612591 is an equidigital number, since it uses as much as digits as its factorization.

53612591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 32.

The square root of 53612591 is about 7322.0619363674. The cubic root of 53612591 is about 377.0702470258.

The spelling of 53612591 in words is "fifty-three million, six hundred twelve thousand, five hundred ninety-one".