264982021 has 4 divisors (see below), whose sum is σ = 265045932. Its totient is φ = 264918112.

The previous prime is 264982013. The next prime is 264982051. The reversal of 264982021 is 120289462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 202350625 + 62631396 = 14225^2 + 7914^2 .

It is a cyclic number.

It is not a de Polignac number, because 264982021 - 2³ = 264982013 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 (264982051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25270 + ... + 34183.

It is an arithmetic number, because the mean of its divisors is an integer number (66261483).

Almost surely, 2^264982021 is an apocalyptic number.

It is an amenable number.

264982021 is a deficient number, since it is larger than the sum of its proper divisors (63911).

264982021 is an equidigital number, since it uses as much as digits as its factorization.

264982021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63910.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 264982021 is about 16278.2683661377. The cubic root of 264982021 is about 642.3013024947.

The spelling of 264982021 in words is "two hundred sixty-four million, nine hundred eighty-two thousand, twenty-one".