51985162 has 4 divisors (see below), whose sum is σ = 77977746. Its totient is φ = 25992580.

The previous prime is 51985097. The next prime is 51985163. The reversal of 51985162 is 26158915.

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

It can be written as a sum of positive squares in only one way, i.e., 35509681 + 16475481 = 5959^2 + 4059^2 .

It is not an unprimeable number, because it can be changed into a prime (51985163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12996289 + ... + 12996292.

Almost surely, 2^51985162 is an apocalyptic number.

51985162 is a deficient number, since it is larger than the sum of its proper divisors (25992584).

51985162 is a wasteful number, since it uses less digits than its factorization.

51985162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25992583.

The product of its digits is 21600, while the sum is 37.

The square root of 51985162 is about 7210.0736473354. The cubic root of 51985162 is about 373.2156103810.

The spelling of 51985162 in words is "fifty-one million, nine hundred eighty-five thousand, one hundred sixty-two".