434645261 has 4 divisors (see below), whose sum is σ = 434698524. Its totient is φ = 434592000.

The previous prime is 434645227. The next prime is 434645269. The reversal of 434645261 is 162546434.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 162546434 = 2 ⋅81273217.

It can be written as a sum of positive squares in 2 ways, for example, as 275759236 + 158886025 = 16606^2 + 12605^2 .

It is a cyclic number.

It is not a de Polignac number, because 434645261 - 2¹⁰ = 434644237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434645269) 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, 11540 + ... + 31661.

It is an arithmetic number, because the mean of its divisors is an integer number (108674631).

Almost surely, 2^434645261 is an apocalyptic number.

It is an amenable number.

434645261 is a deficient number, since it is larger than the sum of its proper divisors (53263).

434645261 is a wasteful number, since it uses less digits than its factorization.

434645261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53262.

The product of its digits is 69120, while the sum is 35.

The square root of 434645261 is about 20848.1476635216. The cubic root of 434645261 is about 757.4924634816.

The spelling of 434645261 in words is "four hundred thirty-four million, six hundred forty-five thousand, two hundred sixty-one".