51121160 has 16 divisors (see below), whose sum is σ = 115022700. Its totient is φ = 20448448.

The previous prime is 51121141. The next prime is 51121163. The reversal of 51121160 is 6112115.

It can be written as a sum of positive squares in 2 ways, for example, as 48972004 + 2149156 = 6998^2 + 1466^2 .

It is a super-2 number, since 2×51121160² = 5226745999491200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51121163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638975 + ... + 639054.

Almost surely, 2^51121160 is an apocalyptic number.

It is an amenable number.

51121160 is an abundant number, since it is smaller than the sum of its proper divisors (63901540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51121160 is a wasteful number, since it uses less digits than its factorization.

51121160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278040 (or 1278036 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 51121160 is about 7149.9062930922. The cubic root of 51121160 is about 371.1364135348.

Adding to 51121160 its reverse (6112115), we get a palindrome (57233275).

The spelling of 51121160 in words is "fifty-one million, one hundred twenty-one thousand, one hundred sixty".