274992881 has 2 divisors, whose sum is σ = 274992882. Its totient is φ = 274992880.

The previous prime is 274992821. The next prime is 274992937. The reversal of 274992881 is 188299472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248377600 + 26615281 = 15760^2 + 5159^2 .

It is a cyclic number.

It is not a de Polignac number, because 274992881 - 2¹⁴ = 274976497 is a prime.

It is a super-2 number, since 2×274992881² = 151242169201360322, 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 (274992811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137496440 + 137496441.

It is an arithmetic number, because the mean of its divisors is an integer number (137496441).

Almost surely, 2^274992881 is an apocalyptic number.

It is an amenable number.

274992881 is a deficient number, since it is larger than the sum of its proper divisors (1).

274992881 is an equidigital number, since it uses as much as digits as its factorization.

274992881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 274992881 is about 16582.9093044616. The cubic root of 274992881 is about 650.2901119164.

The spelling of 274992881 in words is "two hundred seventy-four million, nine hundred ninety-two thousand, eight hundred eighty-one".