8457661252 has 12 divisors (see below), whose sum is σ = 14801560956. Its totient is φ = 4228643840.

The previous prime is 8457661249. The next prime is 8457661283. The reversal of 8457661252 is 2521667548.

It can be written as a sum of positive squares in 2 ways, for example, as 3107616516 + 5350044736 = 55746^2 + 73144^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126828 + ... + 181660.

It is an arithmetic number, because the mean of its divisors is an integer number (1233463413).

Almost surely, 2^8457661252 is an apocalyptic number.

It is an amenable number.

8457661252 is a deficient number, since it is larger than the sum of its proper divisors (6343899704).

8457661252 is a wasteful number, since it uses less digits than its factorization.

8457661252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93398 (or 93396 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 8457661252 is about 91965.5438302846. The cubic root of 8457661252 is about 2037.4334354507.

The spelling of 8457661252 in words is "eight billion, four hundred fifty-seven million, six hundred sixty-one thousand, two hundred fifty-two".