87209522 has 8 divisors (see below), whose sum is σ = 132470400. Its totient is φ = 43052724.

The previous prime is 87209519. The next prime is 87209527. The reversal of 87209522 is 22590278.

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

It is not an unprimeable number, because it can be changed into a prime (87209527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275822 + ... + 276137.

It is an arithmetic number, because the mean of its divisors is an integer number (16558800).

Almost surely, 2^87209522 is an apocalyptic number.

87209522 is a deficient number, since it is larger than the sum of its proper divisors (45260878).

87209522 is a wasteful number, since it uses less digits than its factorization.

87209522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552040.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 87209522 is about 9338.6038571084. The cubic root of 87209522 is about 443.4601865623.

The spelling of 87209522 in words is "eighty-seven million, two hundred nine thousand, five hundred twenty-two".