10528981 has 4 divisors (see below), whose sum is σ = 10559500. Its totient is φ = 10498464.

The previous prime is 10528961. The next prime is 10528997. The reversal of 10528981 is 18982501.

10528981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6937956 + 3591025 = 2634^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 10528981 - 2⁵ = 10528949 is a prime.

It is a super-2 number, since 2×10528981² = 221718881796722, 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 (10528901) 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, 14736 + ... + 15433.

It is an arithmetic number, because the mean of its divisors is an integer number (2639875).

Almost surely, 2^10528981 is an apocalyptic number.

It is an amenable number.

10528981 is a deficient number, since it is larger than the sum of its proper divisors (30519).

10528981 is an equidigital number, since it uses as much as digits as its factorization.

10528981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30518.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 10528981 is about 3244.8391331467. The cubic root of 10528981 is about 219.1772367561.

The spelling of 10528981 in words is "ten million, five hundred twenty-eight thousand, nine hundred eighty-one".