274741221 has 4 divisors (see below), whose sum is σ = 366321632. Its totient is φ = 183160812.

The previous prime is 274741213. The next prime is 274741231. The reversal of 274741221 is 122147472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 274741221 - 2³ = 274741213 is a prime.

It is a super-3 number, since 3×274741221³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274741231) 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, 45790201 + ... + 45790206.

It is an arithmetic number, because the mean of its divisors is an integer number (91580408).

Almost surely, 2^274741221 is an apocalyptic number.

It is an amenable number.

274741221 is a deficient number, since it is larger than the sum of its proper divisors (91580411).

274741221 is an equidigital number, since it uses as much as digits as its factorization.

274741221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91580410.

The product of its digits is 6272, while the sum is 30.

The square root of 274741221 is about 16575.3196349271. The cubic root of 274741221 is about 650.0916801649.

Adding to 274741221 its reverse (122147472), we get a palindrome (396888693).

The spelling of 274741221 in words is "two hundred seventy-four million, seven hundred forty-one thousand, two hundred twenty-one".