87571625 has 8 divisors (see below), whose sum is σ = 109289544. Its totient is φ = 70057200.

The previous prime is 87571609. The next prime is 87571657. The reversal of 87571625 is 52617578.

It can be written as a sum of positive squares in 4 ways, for example, as 2729104 + 84842521 = 1652^2 + 9211^2 .

It is not a de Polignac number, because 87571625 - 2⁴ = 87571609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350162 + ... + 350411.

It is an arithmetic number, because the mean of its divisors is an integer number (13661193).

Almost surely, 2^87571625 is an apocalyptic number.

It is an amenable number.

87571625 is a deficient number, since it is larger than the sum of its proper divisors (21717919).

87571625 is an equidigital number, since it uses as much as digits as its factorization.

87571625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700588 (or 700578 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 87571625 is about 9357.9712010670. The cubic root of 87571625 is about 444.0731033082.

The spelling of 87571625 in words is "eighty-seven million, five hundred seventy-one thousand, six hundred twenty-five".