10520845 has 4 divisors (see below), whose sum is σ = 12625020. Its totient is φ = 8416672.

The previous prime is 10520837. The next prime is 10520857. The reversal of 10520845 is 54802501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54802501 = 13 ⋅4215577.

It can be written as a sum of positive squares in 2 ways, for example, as 7064964 + 3455881 = 2658^2 + 1859^2 .

It is a cyclic number.

It is not a de Polignac number, because 10520845 - 2³ = 10520837 is a prime.

It is a super-2 number, since 2×10520845² = 221376359028050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052080 + ... + 1052089.

It is an arithmetic number, because the mean of its divisors is an integer number (3156255).

Almost surely, 2^10520845 is an apocalyptic number.

It is an amenable number.

10520845 is a deficient number, since it is larger than the sum of its proper divisors (2104175).

10520845 is an equidigital number, since it uses as much as digits as its factorization.

10520845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104174.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 10520845 is about 3243.5852077601. The cubic root of 10520845 is about 219.1207676793.

The spelling of 10520845 in words is "ten million, five hundred twenty thousand, eight hundred forty-five".