51361043 has 2 divisors, whose sum is σ = 51361044. Its totient is φ = 51361042.

The previous prime is 51361033. The next prime is 51361087. The reversal of 51361043 is 34016315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51361043 - 2⁴ = 51361027 is a prime.

It is not a weakly prime, because it can be changed into another prime (51361003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25680521 + 25680522.

It is an arithmetic number, because the mean of its divisors is an integer number (25680522).

Almost surely, 2^51361043 is an apocalyptic number.

51361043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51361043 is an equidigital number, since it uses as much as digits as its factorization.

51361043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51361043 is about 7166.6619147271. The cubic root of 51361043 is about 371.7160197309.

Adding to 51361043 its reverse (34016315), we get a palindrome (85377358).

The spelling of 51361043 in words is "fifty-one million, three hundred sixty-one thousand, forty-three".