87510212 has 12 divisors (see below), whose sum is σ = 153231036. Its totient is φ = 43729920.

The previous prime is 87510211. The next prime is 87510221. The reversal of 87510212 is 21201578.

It can be written as a sum of positive squares in 2 ways, for example, as 9647236 + 77862976 = 3106^2 + 8824^2 .

It is a super-4 number, since 4×87510212⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (87510211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3068 + ... + 13580.

It is an arithmetic number, because the mean of its divisors is an integer number (12769253).

Almost surely, 2^87510212 is an apocalyptic number.

It is an amenable number.

87510212 is a deficient number, since it is larger than the sum of its proper divisors (65720824).

87510212 is a wasteful number, since it uses less digits than its factorization.

87510212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12598 (or 12596 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 87510212 is about 9354.6893053698. The cubic root of 87510212 is about 443.9692712007.

The spelling of 87510212 in words is "eighty-seven million, five hundred ten thousand, two hundred twelve".