85807451 has 2 divisors, whose sum is σ = 85807452. Its totient is φ = 85807450.

The previous prime is 85807427. The next prime is 85807459. The reversal of 85807451 is 15470858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85807451 - 2¹⁴ = 85791067 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 (85807459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42903725 + 42903726.

It is an arithmetic number, because the mean of its divisors is an integer number (42903726).

Almost surely, 2^85807451 is an apocalyptic number.

85807451 is a deficient number, since it is larger than the sum of its proper divisors (1).

85807451 is an equidigital number, since it uses as much as digits as its factorization.

85807451 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 85807451 is about 9263.2311317380. The cubic root of 85807451 is about 441.0708267353.

The spelling of 85807451 in words is "eighty-five million, eight hundred seven thousand, four hundred fifty-one".