451430647 has 2 divisors, whose sum is σ = 451430648. Its totient is φ = 451430646.

The previous prime is 451430543. The next prime is 451430659. The reversal of 451430647 is 746034154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451430647 - 2¹¹ = 451428599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451431647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225715323 + 225715324.

It is an arithmetic number, because the mean of its divisors is an integer number (225715324).

Almost surely, 2^451430647 is an apocalyptic number.

451430647 is a deficient number, since it is larger than the sum of its proper divisors (1).

451430647 is an equidigital number, since it uses as much as digits as its factorization.

451430647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 451430647 is about 21246.8973499662. The cubic root of 451430647 is about 767.1206609324.

The spelling of 451430647 in words is "four hundred fifty-one million, four hundred thirty thousand, six hundred forty-seven".