461571961 has 2 divisors, whose sum is σ = 461571962. Its totient is φ = 461571960.

The previous prime is 461571953. The next prime is 461571967. The reversal of 461571961 is 169175164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 457746025 + 3825936 = 21395^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 461571961 - 2³ = 461571953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (461571967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230785980 + 230785981.

It is an arithmetic number, because the mean of its divisors is an integer number (230785981).

Almost surely, 2^461571961 is an apocalyptic number.

It is an amenable number.

461571961 is a deficient number, since it is larger than the sum of its proper divisors (1).

461571961 is an equidigital number, since it uses as much as digits as its factorization.

461571961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 40.

The square root of 461571961 is about 21484.2258645733. The cubic root of 461571961 is about 772.8225865823.

The spelling of 461571961 in words is "four hundred sixty-one million, five hundred seventy-one thousand, nine hundred sixty-one".