274497961 has 2 divisors, whose sum is σ = 274497962. Its totient is φ = 274497960.

The previous prime is 274497947. The next prime is 274497967. The reversal of 274497961 is 169794472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201498025 + 72999936 = 14195^2 + 8544^2 .

It is a cyclic number.

It is not a de Polignac number, because 274497961 - 2⁷ = 274497833 is a prime.

It is a super-3 number, since 3×274497961³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (274497967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137248980 + 137248981.

It is an arithmetic number, because the mean of its divisors is an integer number (137248981).

Almost surely, 2^274497961 is an apocalyptic number.

It is an amenable number.

274497961 is a deficient number, since it is larger than the sum of its proper divisors (1).

274497961 is an equidigital number, since it uses as much as digits as its factorization.

274497961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 274497961 is about 16567.9799915379. The cubic root of 274497961 is about 649.8997565333.

The spelling of 274497961 in words is "two hundred seventy-four million, four hundred ninety-seven thousand, nine hundred sixty-one".