274888961 has 2 divisors, whose sum is σ = 274888962. Its totient is φ = 274888960.

The previous prime is 274888951. The next prime is 274888967. The reversal of 274888961 is 169888472.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254593936 + 20295025 = 15956^2 + 4505^2 .

It is a cyclic number.

It is not a de Polignac number, because 274888961 - 2¹⁰ = 274887937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (274888967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137444480 + 137444481.

It is an arithmetic number, because the mean of its divisors is an integer number (137444481).

Almost surely, 2^274888961 is an apocalyptic number.

It is an amenable number.

274888961 is a deficient number, since it is larger than the sum of its proper divisors (1).

274888961 is an equidigital number, since it uses as much as digits as its factorization.

274888961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 53.

The square root of 274888961 is about 16579.7756619322. The cubic root of 274888961 is about 650.2081865679.

The spelling of 274888961 in words is "two hundred seventy-four million, eight hundred eighty-eight thousand, nine hundred sixty-one".