451400263 has 4 divisors (see below), whose sum is σ = 452226040. Its totient is φ = 450574488.

The previous prime is 451400251. The next prime is 451400273. The reversal of 451400263 is 362004154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 451400263 - 2¹⁷ = 451269191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451400203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412068 + ... + 413161.

It is an arithmetic number, because the mean of its divisors is an integer number (113056510).

Almost surely, 2^451400263 is an apocalyptic number.

451400263 is a deficient number, since it is larger than the sum of its proper divisors (825777).

451400263 is an equidigital number, since it uses as much as digits as its factorization.

451400263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825776.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 451400263 is about 21246.1823158891. The cubic root of 451400263 is about 767.1034499335.

The spelling of 451400263 in words is "four hundred fifty-one million, four hundred thousand, two hundred sixty-three".