87575763257 has 2 divisors, whose sum is σ = 87575763258. Its totient is φ = 87575763256.

The previous prime is 87575763241. The next prime is 87575763269. The reversal of 87575763257 is 75236757578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53463150841 + 34112612416 = 231221^2 + 184696^2 .

It is a cyclic number.

It is not a de Polignac number, because 87575763257 - 2⁴ = 87575763241 is a prime.

It is a super-2 number, since 2×87575763257² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87575763257.

It is not a weakly prime, because it can be changed into another prime (87575769257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43787881628 + 43787881629.

It is an arithmetic number, because the mean of its divisors is an integer number (43787881629).

Almost surely, 2^87575763257 is an apocalyptic number.

It is an amenable number.

87575763257 is a deficient number, since it is larger than the sum of its proper divisors (1).

87575763257 is an equidigital number, since it uses as much as digits as its factorization.

87575763257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86436000, while the sum is 62.

The spelling of 87575763257 in words is "eighty-seven billion, five hundred seventy-five million, seven hundred sixty-three thousand, two hundred fifty-seven".