274711961 has 2 divisors, whose sum is σ = 274711962. Its totient is φ = 274711960.

The previous prime is 274711951. The next prime is 274711963. The reversal of 274711961 is 169117472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237745561 + 36966400 = 15419^2 + 6080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274711961 is a prime.

It is a Sophie Germain prime.

Together with 274711963, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (274711963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137355980 + 137355981.

It is an arithmetic number, because the mean of its divisors is an integer number (137355981).

Almost surely, 2^274711961 is an apocalyptic number.

It is an amenable number.

274711961 is a deficient number, since it is larger than the sum of its proper divisors (1).

274711961 is an equidigital number, since it uses as much as digits as its factorization.

274711961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 38.

The square root of 274711961 is about 16574.4369738462. The cubic root of 274711961 is about 650.0686010436.

The spelling of 274711961 in words is "two hundred seventy-four million, seven hundred eleven thousand, nine hundred sixty-one".