87520461 has 8 divisors (see below), whose sum is σ = 133364544. Its totient is φ = 50011680.

The previous prime is 87520457. The next prime is 87520469. The reversal of 87520461 is 16402578.

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

It is not a de Polignac number, because 87520461 - 2² = 87520457 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87520469) 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, 2083800 + ... + 2083841.

It is an arithmetic number, because the mean of its divisors is an integer number (16670568).

Almost surely, 2^87520461 is an apocalyptic number.

It is an amenable number.

87520461 is a deficient number, since it is larger than the sum of its proper divisors (45844083).

87520461 is a wasteful number, since it uses less digits than its factorization.

87520461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167651.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 87520461 is about 9355.2370894596. The cubic root of 87520461 is about 443.9866027530.

The spelling of 87520461 in words is "eighty-seven million, five hundred twenty thousand, four hundred sixty-one".