87502109 has 4 divisors (see below), whose sum is σ = 89363904. Its totient is φ = 85640316.

The previous prime is 87502073. The next prime is 87502117. The reversal of 87502109 is 90120578.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87502109 - 2¹² = 87498013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87502199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930827 + ... + 930920.

It is an arithmetic number, because the mean of its divisors is an integer number (22340976).

Almost surely, 2^87502109 is an apocalyptic number.

It is an amenable number.

87502109 is a deficient number, since it is larger than the sum of its proper divisors (1861795).

87502109 is a wasteful number, since it uses less digits than its factorization.

87502109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861794.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 87502109 is about 9354.2561970474. The cubic root of 87502109 is about 443.9555676799.

The spelling of 87502109 in words is "eighty-seven million, five hundred two thousand, one hundred nine".