274021513 has 4 divisors (see below), whose sum is σ = 274547988. Its totient is φ = 273495040.

The previous prime is 274021481. The next prime is 274021529. The reversal of 274021513 is 315120472.

It is a happy number.

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 131171209 + 142850304 = 11453^2 + 11952^2 .

It is a cyclic number.

It is not a de Polignac number, because 274021513 - 2⁵ = 274021481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274022513) 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, 262456 + ... + 263497.

It is an arithmetic number, because the mean of its divisors is an integer number (68636997).

Almost surely, 2^274021513 is an apocalyptic number.

It is an amenable number.

274021513 is a deficient number, since it is larger than the sum of its proper divisors (526475).

274021513 is an equidigital number, since it uses as much as digits as its factorization.

274021513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526474.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 274021513 is about 16553.5951684219. The cubic root of 274021513 is about 649.5235269478.

Adding to 274021513 its reverse (315120472), we get a palindrome (589141985).

The spelling of 274021513 in words is "two hundred seventy-four million, twenty-one thousand, five hundred thirteen".