501256969 has 2 divisors, whose sum is σ = 501256970. Its totient is φ = 501256968.

The previous prime is 501256937. The next prime is 501257017. The reversal of 501256969 is 969652105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449991369 + 51265600 = 21213^2 + 7160^2 .

It is a cyclic number.

It is not a de Polignac number, because 501256969 - 2⁵ = 501256937 is a prime.

It is a super-2 number, since 2×501256969² = 502517097942133922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (501256069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250628484 + 250628485.

It is an arithmetic number, because the mean of its divisors is an integer number (250628485).

Almost surely, 2^501256969 is an apocalyptic number.

It is an amenable number.

501256969 is a deficient number, since it is larger than the sum of its proper divisors (1).

501256969 is an equidigital number, since it uses as much as digits as its factorization.

501256969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 501256969 is about 22388.7688138495. The cubic root of 501256969 is about 794.3650740549.

The spelling of 501256969 in words is "five hundred one million, two hundred fifty-six thousand, nine hundred sixty-nine".