50851161 has 9 divisors (see below), whose sum is σ = 73482591. Its totient is φ = 33886512.

The previous prime is 50851159. The next prime is 50851169. The reversal of 50851161 is 16115805.

The square root of 50851161 is 7131.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 30735936 = 4485^2 + 5544^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 50851161 - 2¹ = 50851159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50851169) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20205 + ... + 22581.

Almost surely, 2^50851161 is an apocalyptic number.

50851161 is the 7131-st square number.

50851161 is the 3566-th centered octagonal number.

It is an amenable number.

50851161 is a deficient number, since it is larger than the sum of its proper divisors (22631430).

50851161 is an frugal number, since it uses more digits than its factorization.

50851161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760 (or 2380 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The cubic root of 50851161 is about 370.4818679080.

Adding to 50851161 its reverse (16115805), we get a palindrome (66966966).

The spelling of 50851161 in words is "fifty million, eight hundred fifty-one thousand, one hundred sixty-one".