502731149 has 2 divisors, whose sum is σ = 502731150. Its totient is φ = 502731148.

The previous prime is 502731139. The next prime is 502731161. The reversal of 502731149 is 941137205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403728649 + 99002500 = 20093^2 + 9950^2 .

It is a cyclic number.

It is not a de Polignac number, because 502731149 - 2⁴ = 502731133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (502731109) 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, 251365574 + 251365575.

It is an arithmetic number, because the mean of its divisors is an integer number (251365575).

Almost surely, 2^502731149 is an apocalyptic number.

It is an amenable number.

502731149 is a deficient number, since it is larger than the sum of its proper divisors (1).

502731149 is an equidigital number, since it uses as much as digits as its factorization.

502731149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 502731149 is about 22421.6669540871. Note that the first 3 decimals coincide. The cubic root of 502731149 is about 795.1430456048.

The spelling of 502731149 in words is "five hundred two million, seven hundred thirty-one thousand, one hundred forty-nine".