10520239 has 4 divisors (see below), whose sum is σ = 10529056. Its totient is φ = 10511424.

The previous prime is 10520227. The next prime is 10520291. The reversal of 10520239 is 93202501.

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: 93202501 = 7 ⋅13314643.

It is a cyclic number.

It is not a de Polignac number, because 10520239 - 2⁵ = 10520207 is a prime.

It is a super-2 number, since 2×10520239² = 221350857234242, 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 (10520219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2274 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (2632264).

Almost surely, 2^10520239 is an apocalyptic number.

10520239 is a deficient number, since it is larger than the sum of its proper divisors (8817).

10520239 is an equidigital number, since it uses as much as digits as its factorization.

10520239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 10520239 is about 3243.4917912645. The cubic root of 10520239 is about 219.1165604845.

The spelling of 10520239 in words is "ten million, five hundred twenty thousand, two hundred thirty-nine".