50351513 has 4 divisors (see below), whose sum is σ = 50382948. Its totient is φ = 50320080.

The previous prime is 50351503. The next prime is 50351573. The reversal of 50351513 is 31515305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33269824 + 17081689 = 5768^2 + 4133^2 .

It is a cyclic number.

It is not a de Polignac number, because 50351513 - 2⁶ = 50351449 is a prime.

It is a super-2 number, since 2×50351513² = 5070549722778338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50351503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13178 + ... + 16563.

It is an arithmetic number, because the mean of its divisors is an integer number (12595737).

Almost surely, 2^50351513 is an apocalyptic number.

It is an amenable number.

50351513 is a deficient number, since it is larger than the sum of its proper divisors (31435).

50351513 is a wasteful number, since it uses less digits than its factorization.

50351513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31434.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 50351513 is about 7095.8800018039. The cubic root of 50351513 is about 369.2644579093.

Adding to 50351513 its reverse (31515305), we get a palindrome (81866818).

The spelling of 50351513 in words is "fifty million, three hundred fifty-one thousand, five hundred thirteen".