53397557431 has 2 divisors, whose sum is σ = 53397557432. Its totient is φ = 53397557430.

The previous prime is 53397557419. The next prime is 53397557449. The reversal of 53397557431 is 13475579335.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53397557431 is a prime.

It is a super-2 number, since 2×53397557431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53397557461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26698778715 + 26698778716.

It is an arithmetic number, because the mean of its divisors is an integer number (26698778716).

Almost surely, 2^53397557431 is an apocalyptic number.

53397557431 is a deficient number, since it is larger than the sum of its proper divisors (1).

53397557431 is an equidigital number, since it uses as much as digits as its factorization.

53397557431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5953500, while the sum is 52.

The spelling of 53397557431 in words is "fifty-three billion, three hundred ninety-seven million, five hundred fifty-seven thousand, four hundred thirty-one".