87521154 has 24 divisors (see below), whose sum is σ = 203621328. Its totient is φ = 25005960.

The previous prime is 87521149. The next prime is 87521221. The reversal of 87521154 is 45112578.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148552 + ... + 149139.

It is an arithmetic number, because the mean of its divisors is an integer number (8484222).

Almost surely, 2^87521154 is an apocalyptic number.

87521154 is an abundant number, since it is smaller than the sum of its proper divisors (116100174).

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

87521154 is a wasteful number, since it uses less digits than its factorization.

87521154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297710 (or 297703 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 87521154 is about 9355.2741274641. The cubic root of 87521154 is about 443.9877746005.

The spelling of 87521154 in words is "eighty-seven million, five hundred twenty-one thousand, one hundred fifty-four".