5257732760521 has 2 divisors, whose sum is σ = 5257732760522. Its totient is φ = 5257732760520.

The previous prime is 5257732760381. The next prime is 5257732760597. The reversal of 5257732760521 is 1250672377525.

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., 3710169392400 + 1547563368121 = 1926180^2 + 1244011^2 .

It is a cyclic number.

It is not a de Polignac number, because 5257732760521 - 2²¹ = 5257730663369 is a prime.

It is not a weakly prime, because it can be changed into another prime (5257732760821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628866380260 + 2628866380261.

It is an arithmetic number, because the mean of its divisors is an integer number (2628866380261).

Almost surely, 2^{5257732760521} is an apocalyptic number.

It is an amenable number.

5257732760521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5257732760521 is an equidigital number, since it uses as much as digits as its factorization.

5257732760521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6174000, while the sum is 52.

The spelling of 5257732760521 in words is "five trillion, two hundred fifty-seven billion, seven hundred thirty-two million, seven hundred sixty thousand, five hundred twenty-one".