51171412 has 12 divisors (see below), whose sum is σ = 93443616. Its totient is φ = 24473240.

The previous prime is 51171397. The next prime is 51171413. The reversal of 51171412 is 21417115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51171413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278014 + ... + 278197.

It is an arithmetic number, because the mean of its divisors is an integer number (7786968).

Almost surely, 2^51171412 is an apocalyptic number.

It is an amenable number.

51171412 is a deficient number, since it is larger than the sum of its proper divisors (42272204).

51171412 is a wasteful number, since it uses less digits than its factorization.

51171412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556238 (or 556236 counting only the distinct ones).

The product of its digits is 280, while the sum is 22.

The square root of 51171412 is about 7153.4196018408. The cubic root of 51171412 is about 371.2579824983.

Adding to 51171412 its reverse (21417115), we get a palindrome (72588527).

The spelling of 51171412 in words is "fifty-one million, one hundred seventy-one thousand, four hundred twelve".