50051513 has 2 divisors, whose sum is σ = 50051514. Its totient is φ = 50051512.

The previous prime is 50051509. The next prime is 50051539. The reversal of 50051513 is 31515005.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37356544 + 12694969 = 6112^2 + 3563^2 .

It is a cyclic number.

It is not a de Polignac number, because 50051513 - 2² = 50051509 is a prime.

It is not a weakly prime, because it can be changed into another prime (50051543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25025756 + 25025757.

It is an arithmetic number, because the mean of its divisors is an integer number (25025757).

Almost surely, 2^50051513 is an apocalyptic number.

It is an amenable number.

50051513 is a deficient number, since it is larger than the sum of its proper divisors (1).

50051513 is an equidigital number, since it uses as much as digits as its factorization.

50051513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 50051513 is about 7074.7093933249. The cubic root of 50051513 is about 368.5296234501.

Adding to 50051513 its reverse (31515005), we get a palindrome (81566518).

The spelling of 50051513 in words is "fifty million, fifty-one thousand, five hundred thirteen".