10521416 has 8 divisors (see below), whose sum is σ = 19727670. Its totient is φ = 5260704.

The previous prime is 10521377. The next prime is 10521437. The reversal of 10521416 is 61412501.

It can be written as a sum of positive squares in only one way, i.e., 9897316 + 624100 = 3146^2 + 790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×10521416² = 221400389290112, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657581 + ... + 657596.

Almost surely, 2^10521416 is an apocalyptic number.

It is an amenable number.

10521416 is a deficient number, since it is larger than the sum of its proper divisors (9206254).

10521416 is a wasteful number, since it uses less digits than its factorization.

10521416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315183 (or 1315179 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 10521416 is about 3243.6732264518. The cubic root of 10521416 is about 219.1247317365.

Adding to 10521416 its reverse (61412501), we get a palindrome (71933917).

The spelling of 10521416 in words is "ten million, five hundred twenty-one thousand, four hundred sixteen".