274523681 has 2 divisors, whose sum is σ = 274523682. Its totient is φ = 274523680.

The previous prime is 274523651. The next prime is 274523687. The reversal of 274523681 is 186325472.

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., 253446400 + 21077281 = 15920^2 + 4591^2 .

It is a cyclic number.

It is not a de Polignac number, because 274523681 - 2¹⁰ = 274522657 is a prime.

It is a super-2 number, since 2×274523681² = 150726502859579522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (274523687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137261840 + 137261841.

It is an arithmetic number, because the mean of its divisors is an integer number (137261841).

Almost surely, 2^274523681 is an apocalyptic number.

It is an amenable number.

274523681 is a deficient number, since it is larger than the sum of its proper divisors (1).

274523681 is an equidigital number, since it uses as much as digits as its factorization.

274523681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 274523681 is about 16568.7561693689. The cubic root of 274523681 is about 649.9200540729.

The spelling of 274523681 in words is "two hundred seventy-four million, five hundred twenty-three thousand, six hundred eighty-one".