51492143 has 2 divisors, whose sum is σ = 51492144. Its totient is φ = 51492142.

The previous prime is 51492131. The next prime is 51492151. The reversal of 51492143 is 34129415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51492143 - 2⁴ = 51492127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51492173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25746071 + 25746072.

It is an arithmetic number, because the mean of its divisors is an integer number (25746072).

Almost surely, 2^51492143 is an apocalyptic number.

51492143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51492143 is an equidigital number, since it uses as much as digits as its factorization.

51492143 is an evil number, because the sum of its binary digits is even.

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

The square root of 51492143 is about 7175.8026031936. The cubic root of 51492143 is about 372.0320216587.

The spelling of 51492143 in words is "fifty-one million, four hundred ninety-two thousand, one hundred forty-three".