51996143 has 2 divisors, whose sum is σ = 51996144. Its totient is φ = 51996142.

The previous prime is 51996071. The next prime is 51996157. The reversal of 51996143 is 34169915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51996143 - 2²⁴ = 35218927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51996097 and 51996106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51996163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25998071 + 25998072.

It is an arithmetic number, because the mean of its divisors is an integer number (25998072).

Almost surely, 2^51996143 is an apocalyptic number.

51996143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51996143 is an equidigital number, since it uses as much as digits as its factorization.

51996143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 51996143 is about 7210.8351111366. The cubic root of 51996143 is about 373.2418870590.

The spelling of 51996143 in words is "fifty-one million, nine hundred ninety-six thousand, one hundred forty-three".