87497122 has 4 divisors (see below), whose sum is σ = 131245686. Its totient is φ = 43748560.

The previous prime is 87497107. The next prime is 87497173. The reversal of 87497122 is 22179478.

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., 72743841 + 14753281 = 8529^2 + 3841^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21874279 + ... + 21874282.

Almost surely, 2^87497122 is an apocalyptic number.

87497122 is a deficient number, since it is larger than the sum of its proper divisors (43748564).

87497122 is a wasteful number, since it uses less digits than its factorization.

87497122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43748563.

The product of its digits is 56448, while the sum is 40.

The square root of 87497122 is about 9353.9896300990. The cubic root of 87497122 is about 443.9471334128.

The spelling of 87497122 in words is "eighty-seven million, four hundred ninety-seven thousand, one hundred twenty-two".