21483535 has 16 divisors (see below), whose sum is σ = 26533440. Its totient is φ = 16692480.

The previous prime is 21483533. The next prime is 21483557. The reversal of 21483535 is 53538412.

It is not a de Polignac number, because 21483535 - 2¹ = 21483533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21483497 and 21483506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21483533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25501 + ... + 26329.

It is an arithmetic number, because the mean of its divisors is an integer number (1658340).

Almost surely, 2^21483535 is an apocalyptic number.

21483535 is a deficient number, since it is larger than the sum of its proper divisors (5049905).

21483535 is an equidigital number, since it uses as much as digits as its factorization.

21483535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its digits is 14400, while the sum is 31.

The square root of 21483535 is about 4635.0334410876. The cubic root of 21483535 is about 277.9938882082.

The spelling of 21483535 in words is "twenty-one million, four hundred eighty-three thousand, five hundred thirty-five".