261452329 has 4 divisors (see below), whose sum is σ = 262574676. Its totient is φ = 260329984.

The previous prime is 261452327. The next prime is 261452353. The reversal of 261452329 is 923254162.

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 113465104 + 147987225 = 10652^2 + 12165^2 .

It is a cyclic number.

It is not a de Polignac number, because 261452329 - 2¹ = 261452327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261452294 and 261452303.

It is not an unprimeable number, because it can be changed into a prime (261452327) 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, 560824 + ... + 561289.

It is an arithmetic number, because the mean of its divisors is an integer number (65643669).

Almost surely, 2^261452329 is an apocalyptic number.

It is an amenable number.

261452329 is a deficient number, since it is larger than the sum of its proper divisors (1122347).

261452329 is a wasteful number, since it uses less digits than its factorization.

261452329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122346.

The product of its digits is 25920, while the sum is 34.

The square root of 261452329 is about 16169.4875923760. The cubic root of 261452329 is about 639.4366209135.

The spelling of 261452329 in words is "two hundred sixty-one million, four hundred fifty-two thousand, three hundred twenty-nine".