87520534 has 16 divisors (see below), whose sum is σ = 133024320. Its totient is φ = 43182720.

The previous prime is 87520519. The next prime is 87520561. The reversal of 87520534 is 43502578.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87520534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60532 + ... + 61960.

It is an arithmetic number, because the mean of its divisors is an integer number (8314020).

Almost surely, 2^87520534 is an apocalyptic number.

87520534 is a deficient number, since it is larger than the sum of its proper divisors (45503786).

87520534 is a wasteful number, since it uses less digits than its factorization.

87520534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 87520534 is about 9355.2409910167. The cubic root of 87520534 is about 443.9867261946.

The spelling of 87520534 in words is "eighty-seven million, five hundred twenty thousand, five hundred thirty-four".