501268997 has 2 divisors, whose sum is σ = 501268998. Its totient is φ = 501268996.

The previous prime is 501268979. The next prime is 501269003. The reversal of 501268997 is 799862105.

Together with previous prime (501268979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433930561 + 67338436 = 20831^2 + 8206^2 .

It is a cyclic number.

It is not a de Polignac number, because 501268997 - 2¹⁰ = 501267973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501261997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250634498 + 250634499.

It is an arithmetic number, because the mean of its divisors is an integer number (250634499).

Almost surely, 2^501268997 is an apocalyptic number.

It is an amenable number.

501268997 is a deficient number, since it is larger than the sum of its proper divisors (1).

501268997 is an equidigital number, since it uses as much as digits as its factorization.

501268997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 501268997 is about 22389.0374290634. The cubic root of 501268997 is about 794.3714277798.

The spelling of 501268997 in words is "five hundred one million, two hundred sixty-eight thousand, nine hundred ninety-seven".