51429143 has 12 divisors (see below), whose sum is σ = 54818280. Its totient is φ = 48238416.

The previous prime is 51429121. The next prime is 51429167. The reversal of 51429143 is 34192415.

It is not a de Polignac number, because 51429143 - 2²⁰ = 50380567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51429113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38696 + ... + 40002.

It is an arithmetic number, because the mean of its divisors is an integer number (4568190).

Almost surely, 2^51429143 is an apocalyptic number.

51429143 is a deficient number, since it is larger than the sum of its proper divisors (3389137).

51429143 is a wasteful number, since it uses less digits than its factorization.

51429143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454 (or 1435 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 51429143 is about 7171.4115068095. The cubic root of 51429143 is about 371.8802342130.

The spelling of 51429143 in words is "fifty-one million, four hundred twenty-nine thousand, one hundred forty-three".