53157900581 has 2 divisors, whose sum is σ = 53157900582. Its totient is φ = 53157900580.

The previous prime is 53157900577. The next prime is 53157900583. The reversal of 53157900581 is 18500975135.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51896940481 + 1260960100 = 227809^2 + 35510^2 .

It is a cyclic number.

It is not a de Polignac number, because 53157900581 - 2² = 53157900577 is a prime.

It is a super-2 number, since 2×53157900581² (a number of 22 digits) contains 22 as substring.

Together with 53157900583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53157900583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26578950290 + 26578950291.

It is an arithmetic number, because the mean of its divisors is an integer number (26578950291).

Almost surely, 2^53157900581 is an apocalyptic number.

It is an amenable number.

53157900581 is a deficient number, since it is larger than the sum of its proper divisors (1).

53157900581 is an equidigital number, since it uses as much as digits as its factorization.

53157900581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 44.

The spelling of 53157900581 in words is "fifty-three billion, one hundred fifty-seven million, nine hundred thousand, five hundred eighty-one".