87530474 has 4 divisors (see below), whose sum is σ = 131295714. Its totient is φ = 43765236.

The previous prime is 87530461. The next prime is 87530489. The reversal of 87530474 is 47403578.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58446025 + 29084449 = 7645^2 + 5393^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21882617 + ... + 21882620.

Almost surely, 2^87530474 is an apocalyptic number.

87530474 is a deficient number, since it is larger than the sum of its proper divisors (43765240).

87530474 is a wasteful number, since it uses less digits than its factorization.

87530474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43765239.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 87530474 is about 9355.7722289504. The cubic root of 87530474 is about 444.0035339112.

The spelling of 87530474 in words is "eighty-seven million, five hundred thirty thousand, four hundred seventy-four".