53249715569 has 2 divisors, whose sum is σ = 53249715570. Its totient is φ = 53249715568.

The previous prime is 53249715557. The next prime is 53249715583. The reversal of 53249715569 is 96551794235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52871023969 + 378691600 = 229937^2 + 19460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53249715569 is a prime.

It is a super-2 number, since 2×53249715569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53249715539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26624857784 + 26624857785.

It is an arithmetic number, because the mean of its divisors is an integer number (26624857785).

Almost surely, 2^53249715569 is an apocalyptic number.

It is an amenable number.

53249715569 is a deficient number, since it is larger than the sum of its proper divisors (1).

53249715569 is an equidigital number, since it uses as much as digits as its factorization.

53249715569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206000, while the sum is 56.

The spelling of 53249715569 in words is "fifty-three billion, two hundred forty-nine million, seven hundred fifteen thousand, five hundred sixty-nine".