51143130 has 64 divisors (see below), whose sum is σ = 137047680. Its totient is φ = 13571712.

The previous prime is 51143119. The next prime is 51143137. The reversal of 51143130 is 3134115.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (51143137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82582 + ... + 83198.

It is an arithmetic number, because the mean of its divisors is an integer number (2141370).

Almost surely, 2^51143130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51143130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68523840).

51143130 is an abundant number, since it is smaller than the sum of its proper divisors (85904550).

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

51143130 is a wasteful number, since it uses less digits than its factorization.

51143130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51143130 is about 7151.4425118293. The cubic root of 51143130 is about 371.1895728607.

Adding to 51143130 its reverse (3134115), we get a palindrome (54277245).

The spelling of 51143130 in words is "fifty-one million, one hundred forty-three thousand, one hundred thirty".