51165412 has 6 divisors (see below), whose sum is σ = 89539478. Its totient is φ = 25582704.

The previous prime is 51165391. The next prime is 51165467. The reversal of 51165412 is 21456115.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49787136 + 1378276 = 7056^2 + 1174^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395673 + ... + 6395680.

Almost surely, 2^51165412 is an apocalyptic number.

It is an amenable number.

51165412 is a deficient number, since it is larger than the sum of its proper divisors (38374066).

51165412 is a wasteful number, since it uses less digits than its factorization.

51165412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791357 (or 12791355 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 51165412 is about 7153.0002097022. Note that the first 3 decimals coincide. The cubic root of 51165412 is about 371.2434715642.

The spelling of 51165412 in words is "fifty-one million, one hundred sixty-five thousand, four hundred twelve".