10529721 has 12 divisors (see below), whose sum is σ = 15240420. Its totient is φ = 7005600.

The previous prime is 10529713. The next prime is 10529723. The reversal of 10529721 is 12792501.

10529721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7502121 + 3027600 = 2739^2 + 1740^2 .

It is not a de Polignac number, because 10529721 - 2³ = 10529713 is a prime.

It is a super-2 number, since 2×10529721² = 221750048675682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10529723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5475 + ... + 7143.

It is an arithmetic number, because the mean of its divisors is an integer number (1270035).

Almost surely, 2^10529721 is an apocalyptic number.

It is an amenable number.

10529721 is a deficient number, since it is larger than the sum of its proper divisors (4710699).

10529721 is a wasteful number, since it uses less digits than its factorization.

10529721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376 (or 2373 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 10529721 is about 3244.9531583676. The cubic root of 10529721 is about 219.1823713890.

The spelling of 10529721 in words is "ten million, five hundred twenty-nine thousand, seven hundred twenty-one".