451424261 has 2 divisors, whose sum is σ = 451424262. Its totient is φ = 451424260.

The previous prime is 451424147. The next prime is 451424269. The reversal of 451424261 is 162424154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295324225 + 156100036 = 17185^2 + 12494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451424261 is a prime.

It is a super-2 number, since 2×451424261² = 407567726838792242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451424269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225712130 + 225712131.

It is an arithmetic number, because the mean of its divisors is an integer number (225712131).

Almost surely, 2^451424261 is an apocalyptic number.

It is an amenable number.

451424261 is a deficient number, since it is larger than the sum of its proper divisors (1).

451424261 is an equidigital number, since it uses as much as digits as its factorization.

451424261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 29.

The square root of 451424261 is about 21246.7470686691. The cubic root of 451424261 is about 767.1170436506.

The spelling of 451424261 in words is "four hundred fifty-one million, four hundred twenty-four thousand, two hundred sixty-one".