87512851 has 2 divisors, whose sum is σ = 87512852. Its totient is φ = 87512850.

The previous prime is 87512833. The next prime is 87512897. The reversal of 87512851 is 15821578.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87512851 - 2⁹ = 87512339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87512851.

It is not a weakly prime, because it can be changed into another prime (87512801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43756425 + 43756426.

It is an arithmetic number, because the mean of its divisors is an integer number (43756426).

Almost surely, 2^87512851 is an apocalyptic number.

87512851 is a deficient number, since it is larger than the sum of its proper divisors (1).

87512851 is an equidigital number, since it uses as much as digits as its factorization.

87512851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 37.

The square root of 87512851 is about 9354.8303565591. The cubic root of 87512851 is about 443.9737340061.

The spelling of 87512851 in words is "eighty-seven million, five hundred twelve thousand, eight hundred fifty-one".