87045525 has 72 divisors (see below), whose sum is σ = 188720064. Its totient is φ = 37440000.

The previous prime is 87045523. The next prime is 87045527. The reversal of 87045525 is 52554078.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87045523) and next prime (87045527).

It is not a de Polignac number, because 87045525 - 2¹ = 87045523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87045525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87045521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 25150 + ... + 28400.

It is an arithmetic number, because the mean of its divisors is an integer number (2621112).

Almost surely, 2^87045525 is an apocalyptic number.

87045525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87045525 is an abundant number, since it is smaller than the sum of its proper divisors (101674539).

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

87045525 is a wasteful number, since it uses less digits than its factorization.

87045525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3283 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 87045525 is about 9329.8191300796. The cubic root of 87045525 is about 443.1820373677.

The spelling of 87045525 in words is "eighty-seven million, forty-five thousand, five hundred twenty-five".