51116146 has 4 divisors (see below), whose sum is σ = 76674222. Its totient is φ = 25558072.

The previous prime is 51116113. The next prime is 51116159. The reversal of 51116146 is 64161115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64161115 = 5 ⋅12832223.

It can be written as a sum of positive squares in only one way, i.e., 35820225 + 15295921 = 5985^2 + 3911^2 .

It is a super-2 number, since 2×51116146² = 5225720763786632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51116146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12779035 + ... + 12779038.

Almost surely, 2^51116146 is an apocalyptic number.

51116146 is a deficient number, since it is larger than the sum of its proper divisors (25558076).

51116146 is a wasteful number, since it uses less digits than its factorization.

51116146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25558075.

The product of its digits is 720, while the sum is 25.

The square root of 51116146 is about 7149.5556505282. Note that the first 3 decimals coincide. The cubic root of 51116146 is about 371.1242793630.

The spelling of 51116146 in words is "fifty-one million, one hundred sixteen thousand, one hundred forty-six".