451563797 has 2 divisors, whose sum is σ = 451563798. Its totient is φ = 451563796.

The previous prime is 451563779. The next prime is 451563803. The reversal of 451563797 is 797365154.

It is a happy number.

Together with previous prime (451563779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391485796 + 60078001 = 19786^2 + 7751^2 .

It is a cyclic number.

It is not a de Polignac number, because 451563797 - 2²⁴ = 434786581 is a prime.

It is a super-2 number, since 2×451563797² = 407819725522114418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451563737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225781898 + 225781899.

It is an arithmetic number, because the mean of its divisors is an integer number (225781899).

Almost surely, 2^451563797 is an apocalyptic number.

It is an amenable number.

451563797 is a deficient number, since it is larger than the sum of its proper divisors (1).

451563797 is an equidigital number, since it uses as much as digits as its factorization.

451563797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 47.

The square root of 451563797 is about 21250.0305176251. The cubic root of 451563797 is about 767.1960745654.

The spelling of 451563797 in words is "four hundred fifty-one million, five hundred sixty-three thousand, seven hundred ninety-seven".