21410485 has 8 divisors (see below), whose sum is σ = 25947576. Its totient is φ = 16958400.

The previous prime is 21410479. The next prime is 21410489. The reversal of 21410485 is 58401412.

It can be written as a sum of positive squares in 4 ways, for example, as 8168164 + 13242321 = 2858^2 + 3639^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-21410485 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410489) 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 7 ways as a sum of consecutive naturals, for example, 20694 + ... + 21703.

It is an arithmetic number, because the mean of its divisors is an integer number (3243447).

Almost surely, 2^21410485 is an apocalyptic number.

It is an amenable number.

21410485 is a deficient number, since it is larger than the sum of its proper divisors (4537091).

21410485 is a wasteful number, since it uses less digits than its factorization.

21410485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42503.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 21410485 is about 4627.1465289096. The cubic root of 21410485 is about 277.6784448681.

Adding to 21410485 its reverse (58401412), we get a palindrome (79811897).

The spelling of 21410485 in words is "twenty-one million, four hundred ten thousand, four hundred eighty-five".