51013843 has 2 divisors, whose sum is σ = 51013844. Its totient is φ = 51013842.

The previous prime is 51013829. The next prime is 51013877. The reversal of 51013843 is 34831015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51013843 - 2⁵ = 51013811 is a prime.

It is not a weakly prime, because it can be changed into another prime (51613843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25506921 + 25506922.

It is an arithmetic number, because the mean of its divisors is an integer number (25506922).

Almost surely, 2^51013843 is an apocalyptic number.

51013843 is a deficient number, since it is larger than the sum of its proper divisors (1).

51013843 is an equidigital number, since it uses as much as digits as its factorization.

51013843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51013843 is about 7142.3975666439. The cubic root of 51013843 is about 370.8765266974.

Adding to 51013843 its reverse (34831015), we get a palindrome (85844858).

The spelling of 51013843 in words is "fifty-one million, thirteen thousand, eight hundred forty-three".