10521722 has 8 divisors (see below), whose sum is σ = 16326900. Its totient is φ = 5079424.

The previous prime is 10521697. The next prime is 10521733. The reversal of 10521722 is 22712501.

It can be written as a sum of positive squares in 2 ways, for example, as 9357481 + 1164241 = 3059^2 + 1079^2 .

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

It is a super-2 number, since 2×10521722² = 221413267690568, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 10521694 and 10521703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90647 + ... + 90762.

Almost surely, 2^10521722 is an apocalyptic number.

10521722 is a deficient number, since it is larger than the sum of its proper divisors (5805178).

10521722 is a wasteful number, since it uses less digits than its factorization.

10521722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181440.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 10521722 is about 3243.7203948553. The cubic root of 10521722 is about 219.1268560234.

The spelling of 10521722 in words is "ten million, five hundred twenty-one thousand, seven hundred twenty-two".