87516450 has 210 divisors, whose sum is σ = 284718849. Its totient is φ = 20003760.

The previous prime is 87516439. The next prime is 87516479. The reversal of 87516450 is 5461578.

87516450 is a `hidden beast` number, since 8 + 7 + 5 + 1 + 645 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 85766121 + 1750329 = 9261^2 + 1323^2 .

It is a tau number, because it is divible by the number of its divisors (210).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6615.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 104 ways as a sum of consecutive naturals, for example, 12502347 + ... + 12502353.

Almost surely, 2^87516450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87516450

87516450 is an abundant number, since it is smaller than the sum of its proper divisors (197202399).

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

87516450 is an frugal number, since it uses more digits than its factorization.

87516450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 87516450 is about 9355.0227150980. The cubic root of 87516450 is about 443.9798201201.

The spelling of 87516450 in words is "eighty-seven million, five hundred sixteen thousand, four hundred fifty".