274198061 has 2 divisors, whose sum is σ = 274198062. Its totient is φ = 274198060.

The previous prime is 274198039. The next prime is 274198081. The reversal of 274198061 is 160891472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251825161 + 22372900 = 15869^2 + 4730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274198061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274198021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137099030 + 137099031.

It is an arithmetic number, because the mean of its divisors is an integer number (137099031).

Almost surely, 2^274198061 is an apocalyptic number.

It is an amenable number.

274198061 is a deficient number, since it is larger than the sum of its proper divisors (1).

274198061 is an equidigital number, since it uses as much as digits as its factorization.

274198061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 274198061 is about 16558.9269277934. The cubic root of 274198061 is about 649.6629897951.

The spelling of 274198061 in words is "two hundred seventy-four million, one hundred ninety-eight thousand, sixty-one".