10712521 has 4 divisors (see below), whose sum is σ = 10973844. Its totient is φ = 10451200.

The previous prime is 10712501. The next prime is 10712543. The reversal of 10712521 is 12521701.

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 978121 + 9734400 = 989^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 10712521 - 2¹¹ = 10710473 is a prime.

It is a super-2 number, since 2×10712521² = 229516212350882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10712501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130600 + ... + 130681.

It is an arithmetic number, because the mean of its divisors is an integer number (2743461).

Almost surely, 2^10712521 is an apocalyptic number.

It is an amenable number.

10712521 is a deficient number, since it is larger than the sum of its proper divisors (261323).

10712521 is an equidigital number, since it uses as much as digits as its factorization.

10712521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261322.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 10712521 is about 3272.9987778794. The cubic root of 10712521 is about 220.4434649890.

The spelling of 10712521 in words is "ten million, seven hundred twelve thousand, five hundred twenty-one".