87445575 has 120 divisors (see below), whose sum is σ = 192051200. Its totient is φ = 38491200.

The previous prime is 87445571. The next prime is 87445583. The reversal of 87445575 is 57554478.

87445575 is a `hidden beast` number, since 8 + 74 + 4 + 5 + 575 = 666.

It is not a de Polignac number, because 87445575 - 2² = 87445571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (784000) is a multiple of the sum of its prime divisors (245).

It is a self number, because there is not a number n which added to its sum of digits gives 87445575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87445571) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 439326 + ... + 439524.

Almost surely, 2^87445575 is an apocalyptic number.

87445575 is an abundant number, since it is smaller than the sum of its proper divisors (104605625).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87445575 is a wasteful number, since it uses less digits than its factorization.

87445575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 245 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 87445575 is about 9351.2338758048. The cubic root of 87445575 is about 443.8599357323.

The spelling of 87445575 in words is "eighty-seven million, four hundred forty-five thousand, five hundred seventy-five".