264783251 has 2 divisors, whose sum is σ = 264783252. Its totient is φ = 264783250.

The previous prime is 264783229. The next prime is 264783301. The reversal of 264783251 is 152387462.

It is a happy number.

264783251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264783251 is a prime.

It is a super-3 number, since 3×264783251³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (264783451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132391625 + 132391626.

It is an arithmetic number, because the mean of its divisors is an integer number (132391626).

Almost surely, 2^264783251 is an apocalyptic number.

264783251 is a deficient number, since it is larger than the sum of its proper divisors (1).

264783251 is an equidigital number, since it uses as much as digits as its factorization.

264783251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 264783251 is about 16272.1618416239. The cubic root of 264783251 is about 642.1406599403.

The spelling of 264783251 in words is "two hundred sixty-four million, seven hundred eighty-three thousand, two hundred fifty-one".