501406247 has 2 divisors, whose sum is σ = 501406248. Its totient is φ = 501406246.

The previous prime is 501406231. The next prime is 501406271. The reversal of 501406247 is 742604105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501406247 - 2⁴ = 501406231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501406207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250703123 + 250703124.

It is an arithmetic number, because the mean of its divisors is an integer number (250703124).

Almost surely, 2^501406247 is an apocalyptic number.

501406247 is a deficient number, since it is larger than the sum of its proper divisors (1).

501406247 is an equidigital number, since it uses as much as digits as its factorization.

501406247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 501406247 is about 22392.1023354217. The cubic root of 501406247 is about 794.4439221424.

The spelling of 501406247 in words is "five hundred one million, four hundred six thousand, two hundred forty-seven".