10520018 has 4 divisors (see below), whose sum is σ = 15780030. Its totient is φ = 5260008.

The previous prime is 10520017. The next prime is 10520033. The reversal of 10520018 is 81002501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81002501 = 17 ⋅4764853.

It can be written as a sum of positive squares in only one way, i.e., 10220809 + 299209 = 3197^2 + 547^2 .

It is a super-2 number, since 2×10520018² = 221341557440648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10519978 and 10520005.

It is not an unprimeable number, because it can be changed into a prime (10520017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630003 + ... + 2630006.

Almost surely, 2^10520018 is an apocalyptic number.

10520018 is a deficient number, since it is larger than the sum of its proper divisors (5260012).

10520018 is an equidigital number, since it uses as much as digits as its factorization.

10520018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260011.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 10520018 is about 3243.4577228631. The cubic root of 10520018 is about 219.1150261372.

Adding to 10520018 its reverse (81002501), we get a palindrome (91522519).

The spelling of 10520018 in words is "ten million, five hundred twenty thousand, eighteen".