10520805 has 16 divisors (see below), whose sum is σ = 17244864. Its totient is φ = 5473920.

The previous prime is 10520791. The next prime is 10520837. The reversal of 10520805 is 50802501.

It is not a de Polignac number, because 10520805 - 2⁷ = 10520677 is a prime.

It is a super-2 number, since 2×10520805² = 221374675696050, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7939 + ... + 9168.

It is an arithmetic number, because the mean of its divisors is an integer number (1077804).

Almost surely, 2^10520805 is an apocalyptic number.

10520805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10520805 is a deficient number, since it is larger than the sum of its proper divisors (6724059).

10520805 is a wasteful number, since it uses less digits than its factorization.

10520805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17156.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 10520805 is about 3243.5790417377. The cubic root of 10520805 is about 219.1204899817.

It can be divided in two parts, 10520 and 805, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 10520805 in words is "ten million, five hundred twenty thousand, eight hundred five".