461073721 has 2 divisors, whose sum is σ = 461073722. Its totient is φ = 461073720.

The previous prime is 461073707. The next prime is 461073733. The reversal of 461073721 is 127370164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442892025 + 18181696 = 21045^2 + 4264^2 .

It is a cyclic number.

It is not a de Polignac number, because 461073721 - 2¹³ = 461065529 is a prime.

It is not a weakly prime, because it can be changed into another prime (461073751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230536860 + 230536861.

It is an arithmetic number, because the mean of its divisors is an integer number (230536861).

Almost surely, 2^461073721 is an apocalyptic number.

It is an amenable number.

461073721 is a deficient number, since it is larger than the sum of its proper divisors (1).

461073721 is an equidigital number, since it uses as much as digits as its factorization.

461073721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 461073721 is about 21472.6272495938. The cubic root of 461073721 is about 772.5444141715.

The spelling of 461073721 in words is "four hundred sixty-one million, seventy-three thousand, seven hundred twenty-one".