264453421 has 2 divisors, whose sum is σ = 264453422. Its totient is φ = 264453420.

The previous prime is 264453359. The next prime is 264453433. The reversal of 264453421 is 124354462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215649225 + 48804196 = 14685^2 + 6986^2 .

It is a cyclic number.

It is not a de Polignac number, because 264453421 - 2¹¹ = 264451373 is a prime.

It is a super-2 number, since 2×264453421² = 139871223757206482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264453491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132226710 + 132226711.

It is an arithmetic number, because the mean of its divisors is an integer number (132226711).

Almost surely, 2^264453421 is an apocalyptic number.

It is an amenable number.

264453421 is a deficient number, since it is larger than the sum of its proper divisors (1).

264453421 is an equidigital number, since it uses as much as digits as its factorization.

264453421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 31.

The square root of 264453421 is about 16262.0238900329. The cubic root of 264453421 is about 641.8739194315.

It can be divided in two parts, 2644 and 53421, that added together give a palindrome (56065).

The spelling of 264453421 in words is "two hundred sixty-four million, four hundred fifty-three thousand, four hundred twenty-one".