805451451 has 16 divisors (see below), whose sum is σ = 1239273984. Its totient is φ = 455788224.

The previous prime is 805451443. The next prime is 805451453. The reversal of 805451451 is 154154508.

It is not a de Polignac number, because 805451451 - 2³ = 805451443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (805451453) 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 15 ways as a sum of consecutive naturals, for example, 184026 + ... + 188351.

It is an arithmetic number, because the mean of its divisors is an integer number (77454624).

Almost surely, 2^805451451 is an apocalyptic number.

805451451 is a deficient number, since it is larger than the sum of its proper divisors (433822533).

805451451 is a wasteful number, since it uses less digits than its factorization.

805451451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372490.

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 805451451 is about 28380.4765816221. The cubic root of 805451451 is about 930.4216113560.

The spelling of 805451451 in words is "eight hundred five million, four hundred fifty-one thousand, four hundred fifty-one".