274991 has 4 divisors (see below), whose sum is σ = 278832. Its totient is φ = 271152.

The previous prime is 274973. The next prime is 274993. The reversal of 274991 is 199472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 274991 - 2¹⁰ = 273967 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 274991.

It is not an unprimeable number, because it can be changed into a prime (274993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (69708).

2²⁷⁴⁹⁹¹ is an apocalyptic number.

274991 is a deficient number, since it is larger than the sum of its proper divisors (3841).

274991 is an equidigital number, since it uses as much as digits as its factorization.

274991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840.

The product of its digits is 4536, while the sum is 32.

The square root of 274991 is about 524.3958428516. The cubic root of 274991 is about 65.0288629213.

The spelling of 274991 in words is "two hundred seventy-four thousand, nine hundred ninety-one".