87530500 has 24 divisors (see below), whose sum is σ = 191167704. Its totient is φ = 35012000.

The previous prime is 87530491. The next prime is 87530543. The reversal of 87530500 is 503578.

It can be written as a sum of positive squares in 4 ways, for example, as 24423364 + 63107136 = 4942^2 + 7944^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87031 + ... + 88030.

It is an arithmetic number, because the mean of its divisors is an integer number (7965321).

Almost surely, 2^87530500 is an apocalyptic number.

It is an amenable number.

87530500 is an abundant number, since it is smaller than the sum of its proper divisors (103637204).

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

87530500 is a wasteful number, since it uses less digits than its factorization.

87530500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175080 (or 175068 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 87530500 is about 9355.7736184668. The cubic root of 87530500 is about 444.0035778734.

It can be divided in two parts, 875 and 30500, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 87530500 in words is "eighty-seven million, five hundred thirty thousand, five hundred".