87174851 has 4 divisors (see below), whose sum is σ = 87193872. Its totient is φ = 87155832.

The previous prime is 87174811. The next prime is 87174859. The reversal of 87174851 is 15847178.

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

It is a cyclic number.

It is not a de Polignac number, because 87174851 - 2²⁶ = 20065987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87174799 and 87174808.

It is not an unprimeable number, because it can be changed into a prime (87174859) 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, 2045 + ... + 13361.

It is an arithmetic number, because the mean of its divisors is an integer number (21798468).

Almost surely, 2^87174851 is an apocalyptic number.

87174851 is a deficient number, since it is larger than the sum of its proper divisors (19021).

87174851 is a wasteful number, since it uses less digits than its factorization.

87174851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19020.

The product of its digits is 62720, while the sum is 41.

The square root of 87174851 is about 9336.7473458373. The cubic root of 87174851 is about 443.4014114586.

The spelling of 87174851 in words is "eighty-seven million, one hundred seventy-four thousand, eight hundred fifty-one".