264881951 has 2 divisors, whose sum is σ = 264881952. Its totient is φ = 264881950.

The previous prime is 264881909. The next prime is 264881957. The reversal of 264881951 is 159188462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264881951 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264881957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132440975 + 132440976.

It is an arithmetic number, because the mean of its divisors is an integer number (132440976).

Almost surely, 2^264881951 is an apocalyptic number.

264881951 is a deficient number, since it is larger than the sum of its proper divisors (1).

264881951 is an equidigital number, since it uses as much as digits as its factorization.

264881951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 44.

The square root of 264881951 is about 16275.1943459978. The cubic root of 264881951 is about 642.2204376572.

The spelling of 264881951 in words is "two hundred sixty-four million, eight hundred eighty-one thousand, nine hundred fifty-one".