86415451 has 2 divisors, whose sum is σ = 86415452. Its totient is φ = 86415450.

The previous prime is 86415431. The next prime is 86415473. The reversal of 86415451 is 15451468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86415451 - 2⁵ = 86415419 is a prime.

It is not a weakly prime, because it can be changed into another prime (86415431) 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 as a sum of consecutive naturals, namely, 43207725 + 43207726.

It is an arithmetic number, because the mean of its divisors is an integer number (43207726).

Almost surely, 2^86415451 is an apocalyptic number.

86415451 is a deficient number, since it is larger than the sum of its proper divisors (1).

86415451 is an equidigital number, since it uses as much as digits as its factorization.

86415451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 34.

The square root of 86415451 is about 9295.9911252109. The cubic root of 86415451 is about 442.1101310303.

The spelling of 86415451 in words is "eighty-six million, four hundred fifteen thousand, four hundred fifty-one".