52724663521 has 2 divisors, whose sum is σ = 52724663522. Its totient is φ = 52724663520.

The previous prime is 52724663429. The next prime is 52724663533. The reversal of 52724663521 is 12536642725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47812195600 + 4912467921 = 218660^2 + 70089^2 .

It is a cyclic number.

It is not a de Polignac number, because 52724663521 - 2⁷ = 52724663393 is a prime.

It is not a weakly prime, because it can be changed into another prime (52724663561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26362331760 + 26362331761.

It is an arithmetic number, because the mean of its divisors is an integer number (26362331761).

Almost surely, 2^52724663521 is an apocalyptic number.

It is an amenable number.

52724663521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52724663521 is an equidigital number, since it uses as much as digits as its factorization.

52724663521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 43.

The spelling of 52724663521 in words is "fifty-two billion, seven hundred twenty-four million, six hundred sixty-three thousand, five hundred twenty-one".