87250531500 has 144 divisors (see below), whose sum is σ = 300268908576. Its totient is φ = 21151632000.

The previous prime is 87250531471. The next prime is 87250531561. The reversal of 87250531500 is 513505278.

87250531500 is a `hidden beast` number, since 8 + 72 + 5 + 0 + 531 + 50 + 0 = 666.

It is a super-2 number, since 2×87250531500² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 831819 + ... + 930818.

It is an arithmetic number, because the mean of its divisors is an integer number (2085200754).

Almost surely, 2^87250531500 is an apocalyptic number.

It is an amenable number.

87250531500 is an abundant number, since it is smaller than the sum of its proper divisors (213018377076).

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

87250531500 is a wasteful number, since it uses less digits than its factorization.

87250531500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762673 (or 1762658 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 87250531500 in words is "eighty-seven billion, two hundred fifty million, five hundred thirty-one thousand, five hundred".