87045851 has 2 divisors, whose sum is σ = 87045852. Its totient is φ = 87045850.

The previous prime is 87045809. The next prime is 87045863. The reversal of 87045851 is 15854078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87045851 - 2¹⁰ = 87044827 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87044851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43522925 + 43522926.

It is an arithmetic number, because the mean of its divisors is an integer number (43522926).

Almost surely, 2^87045851 is an apocalyptic number.

87045851 is a deficient number, since it is larger than the sum of its proper divisors (1).

87045851 is an equidigital number, since it uses as much as digits as its factorization.

87045851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 87045851 is about 9329.8366009272. The cubic root of 87045851 is about 443.1825906305.

The spelling of 87045851 in words is "eighty-seven million, forty-five thousand, eight hundred fifty-one".