21482049 has 4 divisors (see below), whose sum is σ = 28642736. Its totient is φ = 14321364.

The previous prime is 21482029. The next prime is 21482051. The reversal of 21482049 is 94028412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21482049 - 2⁷ = 21481921 is a prime.

It is a super-2 number, since 2×21482049² = 922956858476802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21482029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3580339 + ... + 3580344.

It is an arithmetic number, because the mean of its divisors is an integer number (7160684).

Almost surely, 2^21482049 is an apocalyptic number.

It is an amenable number.

21482049 is a deficient number, since it is larger than the sum of its proper divisors (7160687).

21482049 is an equidigital number, since it uses as much as digits as its factorization.

21482049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7160686.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 21482049 is about 4634.8731374224. The cubic root of 21482049 is about 277.9874785175.

The spelling of 21482049 in words is "twenty-one million, four hundred eighty-two thousand, forty-nine".