51934143 has 4 divisors (see below), whose sum is σ = 69245528. Its totient is φ = 34622760.

The previous prime is 51934121. The next prime is 51934151. The reversal of 51934143 is 34143915.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51934143 - 2²⁰ = 50885567 is a prime.

It is a super-3 number, since 3×51934143³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51934143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51934343) 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, 8655688 + ... + 8655693.

It is an arithmetic number, because the mean of its divisors is an integer number (17311382).

Almost surely, 2^51934143 is an apocalyptic number.

51934143 is a deficient number, since it is larger than the sum of its proper divisors (17311385).

51934143 is a wasteful number, since it uses less digits than its factorization.

51934143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17311384.

The product of its digits is 6480, while the sum is 30.

The square root of 51934143 is about 7206.5347428567. The cubic root of 51934143 is about 373.0934773276.

The spelling of 51934143 in words is "fifty-one million, nine hundred thirty-four thousand, one hundred forty-three".