461051681 has 2 divisors, whose sum is σ = 461051682. Its totient is φ = 461051680.

The previous prime is 461051671. The next prime is 461051693. The reversal of 461051681 is 186150164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286151056 + 174900625 = 16916^2 + 13225^2 .

It is a cyclic number.

It is not a de Polignac number, because 461051681 - 2²² = 456857377 is a prime.

It is a super-2 number, since 2×461051681² = 425137305105851522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (461051621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230525840 + 230525841.

It is an arithmetic number, because the mean of its divisors is an integer number (230525841).

Almost surely, 2^461051681 is an apocalyptic number.

It is an amenable number.

461051681 is a deficient number, since it is larger than the sum of its proper divisors (1).

461051681 is an equidigital number, since it uses as much as digits as its factorization.

461051681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 461051681 is about 21472.1140319252. The cubic root of 461051681 is about 772.5321043901.

The spelling of 461051681 in words is "four hundred sixty-one million, fifty-one thousand, six hundred eighty-one".