451461281 has 2 divisors, whose sum is σ = 451461282. Its totient is φ = 451461280.

The previous prime is 451461253. The next prime is 451461289. The reversal of 451461281 is 182164154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403367056 + 48094225 = 20084^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 451461281 - 2¹⁰ = 451460257 is a prime.

It is a super-2 number, since 2×451461281² = 407634576484321922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (451461289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225730640 + 225730641.

It is an arithmetic number, because the mean of its divisors is an integer number (225730641).

Almost surely, 2^451461281 is an apocalyptic number.

It is an amenable number.

451461281 is a deficient number, since it is larger than the sum of its proper divisors (1).

451461281 is an equidigital number, since it uses as much as digits as its factorization.

451461281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 32.

The square root of 451461281 is about 21247.6182429937. The cubic root of 451461281 is about 767.1380127619.

The spelling of 451461281 in words is "four hundred fifty-one million, four hundred sixty-one thousand, two hundred eighty-one".