264052421 has 2 divisors, whose sum is σ = 264052422. Its totient is φ = 264052420.

The previous prime is 264052357. The next prime is 264052429. The reversal of 264052421 is 124250462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198669025 + 65383396 = 14095^2 + 8086^2 .

It is a cyclic number.

It is not a de Polignac number, because 264052421 - 2⁶ = 264052357 is a prime.

It is a super-2 number, since 2×264052421² = 139447362071922482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264052429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132026210 + 132026211.

It is an arithmetic number, because the mean of its divisors is an integer number (132026211).

Almost surely, 2^264052421 is an apocalyptic number.

It is an amenable number.

264052421 is a deficient number, since it is larger than the sum of its proper divisors (1).

264052421 is an equidigital number, since it uses as much as digits as its factorization.

264052421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 264052421 is about 16249.6898739637. The cubic root of 264052421 is about 641.5493233298.

The spelling of 264052421 in words is "two hundred sixty-four million, fifty-two thousand, four hundred twenty-one".