451220167 has 2 divisors, whose sum is σ = 451220168. Its totient is φ = 451220166.

The previous prime is 451220117. The next prime is 451220179. The reversal of 451220167 is 761022154.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451220167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451220117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225610083 + 225610084.

It is an arithmetic number, because the mean of its divisors is an integer number (225610084).

Almost surely, 2^451220167 is an apocalyptic number.

451220167 is a deficient number, since it is larger than the sum of its proper divisors (1).

451220167 is an equidigital number, since it uses as much as digits as its factorization.

451220167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 451220167 is about 21241.9435786841. The cubic root of 451220167 is about 767.0014188012.

The spelling of 451220167 in words is "four hundred fifty-one million, two hundred twenty thousand, one hundred sixty-seven".