21482901 has 64 divisors (see below), whose sum is σ = 37785600. Its totient is φ = 12072240.

The previous prime is 21482899. The next prime is 21482927. The reversal of 21482901 is 10928412.

It is not a de Polignac number, because 21482901 - 2¹ = 21482899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 457060 + ... + 457106.

It is an arithmetic number, because the mean of its divisors is an integer number (590400).

Almost surely, 2^21482901 is an apocalyptic number.

It is an amenable number.

21482901 is a deficient number, since it is larger than the sum of its proper divisors (16302699).

21482901 is an equidigital number, since it uses as much as digits as its factorization.

21482901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 21482901 is about 4634.9650484119. The cubic root of 21482901 is about 277.9911535580.

The spelling of 21482901 in words is "twenty-one million, four hundred eighty-two thousand, nine hundred one".