264555281 has 2 divisors, whose sum is σ = 264555282. Its totient is φ = 264555280.

The previous prime is 264555257. The next prime is 264555283. The reversal of 264555281 is 182555462.

264555281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189888400 + 74666881 = 13780^2 + 8641^2 .

It is a cyclic number.

It is not a de Polignac number, because 264555281 - 2²² = 260360977 is a prime.

It is a super-2 number, since 2×264555281² = 139978993409977922, which contains 22 as substring.

Together with 264555283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264555283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132277640 + 132277641.

It is an arithmetic number, because the mean of its divisors is an integer number (132277641).

Almost surely, 2^264555281 is an apocalyptic number.

It is an amenable number.

264555281 is a deficient number, since it is larger than the sum of its proper divisors (1).

264555281 is an equidigital number, since it uses as much as digits as its factorization.

264555281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96000, while the sum is 38.

The square root of 264555281 is about 16265.1554250182. The cubic root of 264555281 is about 641.9563194305.

The spelling of 264555281 in words is "two hundred sixty-four million, five hundred fifty-five thousand, two hundred eighty-one".