501242279 has 2 divisors, whose sum is σ = 501242280. Its totient is φ = 501242278.

The previous prime is 501242267. The next prime is 501242323. The reversal of 501242279 is 972242105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501242279 - 2⁸ = 501242023 is a prime.

It is a super-2 number, since 2×501242279² = 502487644514227682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501242239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250621139 + 250621140.

It is an arithmetic number, because the mean of its divisors is an integer number (250621140).

Almost surely, 2^501242279 is an apocalyptic number.

501242279 is a deficient number, since it is larger than the sum of its proper divisors (1).

501242279 is an equidigital number, since it uses as much as digits as its factorization.

501242279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 501242279 is about 22388.4407451703. The cubic root of 501242279 is about 794.3573140052.

The spelling of 501242279 in words is "five hundred one million, two hundred forty-two thousand, two hundred seventy-nine".