5209261 has 4 divisors (see below), whose sum is σ = 5226012. Its totient is φ = 5192512.

The previous prime is 5209177. The next prime is 5209279. The reversal of 5209261 is 1629025.

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 2941225 + 2268036 = 1715^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209261 - 2¹³ = 5201069 is a prime.

It is a super-2 number, since 2×5209261² = 54272800332242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5209291) 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, 7900 + ... + 8533.

It is an arithmetic number, because the mean of its divisors is an integer number (1306503).

Almost surely, 2^5209261 is an apocalyptic number.

It is an amenable number.

5209261 is a deficient number, since it is larger than the sum of its proper divisors (16751).

5209261 is a wasteful number, since it uses less digits than its factorization.

5209261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16750.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 5209261 is about 2282.3805554727. The cubic root of 5209261 is about 173.3506093070.

The spelling of 5209261 in words is "five million, two hundred nine thousand, two hundred sixty-one".