50871013 has 2 divisors, whose sum is σ = 50871014. Its totient is φ = 50871012.

The previous prime is 50870957. The next prime is 50871049. The reversal of 50871013 is 31017805.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34363044 + 16507969 = 5862^2 + 4063^2 .

It is a cyclic number.

It is not a de Polignac number, because 50871013 - 2²¹ = 48773861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50871313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25435506 + 25435507.

It is an arithmetic number, because the mean of its divisors is an integer number (25435507).

Almost surely, 2^50871013 is an apocalyptic number.

It is an amenable number.

50871013 is a deficient number, since it is larger than the sum of its proper divisors (1).

50871013 is an equidigital number, since it uses as much as digits as its factorization.

50871013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 50871013 is about 7132.3918148122. The cubic root of 50871013 is about 370.5300729637.

Adding to 50871013 its reverse (31017805), we get a palindrome (81888818).

The spelling of 50871013 in words is "fifty million, eight hundred seventy-one thousand, thirteen".