87205575 has 12 divisors (see below), whose sum is σ = 144180008. Its totient is φ = 46509600.

The previous prime is 87205561. The next prime is 87205579. The reversal of 87205575 is 57550278.

It is not a de Polignac number, because 87205575 - 2¹⁸ = 86943431 is a prime.

It is a super-2 number, since 2×87205575² = 15209624622161250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87205579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 581296 + ... + 581445.

Almost surely, 2^87205575 is an apocalyptic number.

87205575 is a deficient number, since it is larger than the sum of its proper divisors (56974433).

87205575 is a wasteful number, since it uses less digits than its factorization.

87205575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162754 (or 1162749 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 39.

The square root of 87205575 is about 9338.3925276249. The cubic root of 87205575 is about 443.4534962999.

The spelling of 87205575 in words is "eighty-seven million, two hundred five thousand, five hundred seventy-five".