50515161 has 4 divisors (see below), whose sum is σ = 67353552. Its totient is φ = 33676772.

The previous prime is 50515133. The next prime is 50515163. The reversal of 50515161 is 16151505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50515161 - 2⁶ = 50515097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50515163) 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, 8419191 + ... + 8419196.

It is an arithmetic number, because the mean of its divisors is an integer number (16838388).

Almost surely, 2^50515161 is an apocalyptic number.

It is an amenable number.

50515161 is a deficient number, since it is larger than the sum of its proper divisors (16838391).

50515161 is a wasteful number, since it uses less digits than its factorization.

50515161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16838390.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 50515161 is about 7107.4018459631. The cubic root of 50515161 is about 369.6640754312.

Adding to 50515161 its reverse (16151505), we get a palindrome (66666666).

The spelling of 50515161 in words is "fifty million, five hundred fifteen thousand, one hundred sixty-one".