10520521 has 8 divisors (see below), whose sum is σ = 11505600. Its totient is φ = 9540240.

The previous prime is 10520507. The next prime is 10520537. The reversal of 10520521 is 12502501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10520521 is a prime.

It is a super-2 number, since 2×10520521² = 221362724222882, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 10520495 and 10520504.

It is not an unprimeable number, because it can be changed into a prime (10520551) 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, 4660 + ... + 6538.

It is an arithmetic number, because the mean of its divisors is an integer number (1438200).

Almost surely, 2^10520521 is an apocalyptic number.

10520521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10520521 is a deficient number, since it is larger than the sum of its proper divisors (985079).

10520521 is a wasteful number, since it uses less digits than its factorization.

10520521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 10520521 is about 3243.5352626417. The cubic root of 10520521 is about 219.1185183081.

The spelling of 10520521 in words is "ten million, five hundred twenty thousand, five hundred twenty-one".