8505451 has 2 divisors, whose sum is σ = 8505452. Its totient is φ = 8505450.

The previous prime is 8505433. The next prime is 8505461. The reversal of 8505451 is 1545058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8505451 - 2¹¹ = 8503403 is a prime.

8505451 is a lucky number.

It is equal to p₅₇₁₄₆₅ and since 8505451 and 571465 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8505401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4252725 + 4252726.

It is an arithmetic number, because the mean of its divisors is an integer number (4252726).

Almost surely, 2^8505451 is an apocalyptic number.

8505451 is the 1845-th centered pentagonal number.

8505451 is a deficient number, since it is larger than the sum of its proper divisors (1).

8505451 is an equidigital number, since it uses as much as digits as its factorization.

8505451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 8505451 is about 2916.4106363816. The cubic root of 8505451 is about 204.1263714637.

The spelling of 8505451 in words is "eight million, five hundred five thousand, four hundred fifty-one".