274257493 has 4 divisors (see below), whose sum is σ = 274673068. Its totient is φ = 273841920.

The previous prime is 274257479. The next prime is 274257523. The reversal of 274257493 is 394752472.

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

It can be written as a sum of positive squares in 2 ways, for example, as 172186884 + 102070609 = 13122^2 + 10103^2 .

It is a cyclic number.

It is not a de Polignac number, because 274257493 - 2²¹ = 272160341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274257463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206796 + ... + 208117.

It is an arithmetic number, because the mean of its divisors is an integer number (68668267).

Almost surely, 2^274257493 is an apocalyptic number.

It is an amenable number.

274257493 is a deficient number, since it is larger than the sum of its proper divisors (415575).

274257493 is an equidigital number, since it uses as much as digits as its factorization.

274257493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415574.

The product of its digits is 423360, while the sum is 43.

The square root of 274257493 is about 16560.7213912921. The cubic root of 274257493 is about 649.7099242159.

The spelling of 274257493 in words is "two hundred seventy-four million, two hundred fifty-seven thousand, four hundred ninety-three".