87525857 has 8 divisors (see below), whose sum is σ = 92753640. Its totient is φ = 82445440.

The previous prime is 87525853. The next prime is 87525859. The reversal of 87525857 is 75852578.

It can be written as a sum of positive squares in 4 ways, for example, as 1852321 + 85673536 = 1361^2 + 9256^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87525857 - 2² = 87525853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87525853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35618 + ... + 37995.

It is an arithmetic number, because the mean of its divisors is an integer number (11594205).

Almost surely, 2^87525857 is an apocalyptic number.

It is an amenable number.

87525857 is a deficient number, since it is larger than the sum of its proper divisors (5227783).

87525857 is a wasteful number, since it uses less digits than its factorization.

87525857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73683.

The product of its digits is 784000, while the sum is 47.

The square root of 87525857 is about 9355.5254796297. The cubic root of 87525857 is about 443.9957271049.

The spelling of 87525857 in words is "eighty-seven million, five hundred twenty-five thousand, eight hundred fifty-seven".