451430381 has 2 divisors, whose sum is σ = 451430382. Its totient is φ = 451430380.

The previous prime is 451430363. The next prime is 451430423. The reversal of 451430381 is 183034154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378925156 + 72505225 = 19466^2 + 8515^2 .

It is a cyclic number.

It is not a de Polignac number, because 451430381 - 2¹⁰ = 451429357 is a prime.

It is a super-2 number, since 2×451430381² = 407578777779610322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451430351) 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 as a sum of consecutive naturals, namely, 225715190 + 225715191.

It is an arithmetic number, because the mean of its divisors is an integer number (225715191).

Almost surely, 2^451430381 is an apocalyptic number.

It is an amenable number.

451430381 is a deficient number, since it is larger than the sum of its proper divisors (1).

451430381 is an equidigital number, since it uses as much as digits as its factorization.

451430381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 451430381 is about 21246.8910902278. The cubic root of 451430381 is about 767.1205102602.

The spelling of 451430381 in words is "four hundred fifty-one million, four hundred thirty thousand, three hundred eighty-one".