502157947 has 2 divisors, whose sum is σ = 502157948. Its totient is φ = 502157946.

The previous prime is 502157941. The next prime is 502157983. The reversal of 502157947 is 749751205.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-502157947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (502157941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251078973 + 251078974.

It is an arithmetic number, because the mean of its divisors is an integer number (251078974).

Almost surely, 2^502157947 is an apocalyptic number.

502157947 is a deficient number, since it is larger than the sum of its proper divisors (1).

502157947 is an equidigital number, since it uses as much as digits as its factorization.

502157947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 502157947 is about 22408.8809850024. The cubic root of 502157947 is about 794.8407296672.

The spelling of 502157947 in words is "five hundred two million, one hundred fifty-seven thousand, nine hundred forty-seven".