87561125 has 16 divisors (see below), whose sum is σ = 110023680. Its totient is φ = 69570000.

The previous prime is 87561119. The next prime is 87561197. The reversal of 87561125 is 52116578.

It is not a de Polignac number, because 87561125 - 2⁴ = 87561109 is a prime.

It is a super-2 number, since 2×87561125² = 15333901222531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16556 + ... + 21194.

It is an arithmetic number, because the mean of its divisors is an integer number (6876480).

Almost surely, 2^87561125 is an apocalyptic number.

It is an amenable number.

87561125 is a deficient number, since it is larger than the sum of its proper divisors (22462555).

87561125 is a wasteful number, since it uses less digits than its factorization.

87561125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805 (or 4795 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 87561125 is about 9357.4101652113. The cubic root of 87561125 is about 444.0553542030.

The spelling of 87561125 in words is "eighty-seven million, five hundred sixty-one thousand, one hundred twenty-five".