51143412 has 24 divisors (see below), whose sum is σ = 126354816. Its totient is φ = 16044928.

The previous prime is 51143387. The next prime is 51143413. The reversal of 51143412 is 21434115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51143413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125148 + ... + 125555.

It is an arithmetic number, because the mean of its divisors is an integer number (5264784).

Almost surely, 2^51143412 is an apocalyptic number.

It is an amenable number.

51143412 is an abundant number, since it is smaller than the sum of its proper divisors (75211404).

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

51143412 is a wasteful number, since it uses less digits than its factorization.

51143412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250727 (or 250725 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 51143412 is about 7151.4622281041. The cubic root of 51143412 is about 371.1902550980.

Adding to 51143412 its reverse (21434115), we get a palindrome (72577527).

The spelling of 51143412 in words is "fifty-one million, one hundred forty-three thousand, four hundred twelve".