51255943 has 2 divisors, whose sum is σ = 51255944. Its totient is φ = 51255942.

The previous prime is 51255931. The next prime is 51255959. The reversal of 51255943 is 34955215.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51255943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51255899 and 51255908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51255913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25627971 + 25627972.

It is an arithmetic number, because the mean of its divisors is an integer number (25627972).

Almost surely, 2^51255943 is an apocalyptic number.

51255943 is a deficient number, since it is larger than the sum of its proper divisors (1).

51255943 is an equidigital number, since it uses as much as digits as its factorization.

51255943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 51255943 is about 7159.3255967305. The cubic root of 51255943 is about 371.4622993393.

The spelling of 51255943 in words is "fifty-one million, two hundred fifty-five thousand, nine hundred forty-three".