87527921 has 8 divisors (see below), whose sum is σ = 94436160. Its totient is φ = 80644752.

The previous prime is 87527897. The next prime is 87527933. The reversal of 87527921 is 12972578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87527921 is a prime.

It is a super-2 number, since 2×87527921² = 15322273909164482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87527021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340 + ... + 13298.

It is an arithmetic number, because the mean of its divisors is an integer number (11804520).

Almost surely, 2^87527921 is an apocalyptic number.

It is an amenable number.

87527921 is a deficient number, since it is larger than the sum of its proper divisors (6908239).

87527921 is a wasteful number, since it uses less digits than its factorization.

87527921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12535.

The product of its digits is 70560, while the sum is 41.

The square root of 87527921 is about 9355.6357881226. The cubic root of 87527921 is about 443.9992171211. Note that the first 3 decimals are identical.

The spelling of 87527921 in words is "eighty-seven million, five hundred twenty-seven thousand, nine hundred twenty-one".