451070981 has 4 divisors (see below), whose sum is σ = 451786464. Its totient is φ = 450355500.

The previous prime is 451070953. The next prime is 451070999. The reversal of 451070981 is 189070154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451070981 is a prime.

It is a super-2 number, since 2×451070981² = 406930059800604722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451070951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356795 + ... + 358056.

It is an arithmetic number, because the mean of its divisors is an integer number (112946616).

Almost surely, 2^451070981 is an apocalyptic number.

It is an amenable number.

451070981 is a deficient number, since it is larger than the sum of its proper divisors (715483).

451070981 is an equidigital number, since it uses as much as digits as its factorization.

451070981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715482.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 451070981 is about 21238.4316982210. The cubic root of 451070981 is about 766.9168787805.

The spelling of 451070981 in words is "four hundred fifty-one million, seventy thousand, nine hundred eighty-one".