10521113 has 8 divisors (see below), whose sum is σ = 11524680. Its totient is φ = 9560320.

The previous prime is 10521107. The next prime is 10521149. The reversal of 10521113 is 31112501.

It can be written as a sum of positive squares in 4 ways, for example, as 6568969 + 3952144 = 2563^2 + 1988^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10521113 - 2⁸ = 10520857 is a prime.

It is a super-2 number, since 2×10521113² = 221387637517538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10521013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10178 + ... + 11163.

It is an arithmetic number, because the mean of its divisors is an integer number (1440585).

Almost surely, 2^10521113 is an apocalyptic number.

It is an amenable number.

10521113 is a deficient number, since it is larger than the sum of its proper divisors (1003567).

10521113 is a wasteful number, since it uses less digits than its factorization.

10521113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21387.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 10521113 is about 3243.6265198077. The cubic root of 10521113 is about 219.1226282354.

Adding to 10521113 its reverse (31112501), we get a palindrome (41633614).

The spelling of 10521113 in words is "ten million, five hundred twenty-one thousand, one hundred thirteen".