274145321 has 4 divisors (see below), whose sum is σ = 281554692. Its totient is φ = 266735952.

The previous prime is 274145317. The next prime is 274145341. The reversal of 274145321 is 123541472.

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 266505625 + 7639696 = 16325^2 + 2764^2 .

It is a cyclic number.

It is not a de Polignac number, because 274145321 - 2² = 274145317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274145341) 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, 3704630 + ... + 3704703.

It is an arithmetic number, because the mean of its divisors is an integer number (70388673).

Almost surely, 2^274145321 is an apocalyptic number.

It is an amenable number.

274145321 is a deficient number, since it is larger than the sum of its proper divisors (7409371).

274145321 is an equidigital number, since it uses as much as digits as its factorization.

274145321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409370.

The product of its digits is 6720, while the sum is 29.

The square root of 274145321 is about 16557.3343567133. The cubic root of 274145321 is about 649.6213344761.

Adding to 274145321 its reverse (123541472), we get a palindrome (397686793).

The spelling of 274145321 in words is "two hundred seventy-four million, one hundred forty-five thousand, three hundred twenty-one".