574135721 has 4 divisors (see below), whose sum is σ = 583547844. Its totient is φ = 564723600.

The previous prime is 574135703. The next prime is 574135759. The reversal of 574135721 is 127531475.

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 277056025 + 297079696 = 16645^2 + 17236^2 .

It is a cyclic number.

It is not a de Polignac number, because 574135721 - 2⁶ = 574135657 is a prime.

It is a super-2 number, since 2×574135721² = 659263652256379682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (574137721) 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, 4705970 + ... + 4706091.

It is an arithmetic number, because the mean of its divisors is an integer number (145886961).

Almost surely, 2^574135721 is an apocalyptic number.

It is an amenable number.

574135721 is a deficient number, since it is larger than the sum of its proper divisors (9412123).

574135721 is an equidigital number, since it uses as much as digits as its factorization.

574135721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412122.

The product of its digits is 29400, while the sum is 35.

The square root of 574135721 is about 23961.1293765549. The cubic root of 574135721 is about 831.1349070418.

The spelling of 574135721 in words is "five hundred seventy-four million, one hundred thirty-five thousand, seven hundred twenty-one".