51517043 has 2 divisors, whose sum is σ = 51517044. Its totient is φ = 51517042.

The previous prime is 51517031. The next prime is 51517051. The reversal of 51517043 is 34071515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51517043 - 2⁶ = 51516979 is a prime.

It is a Chen prime.

It is equal to p_3086603 and since 51517043 and 3086603 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51517013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25758521 + 25758522.

It is an arithmetic number, because the mean of its divisors is an integer number (25758522).

Almost surely, 2^51517043 is an apocalyptic number.

51517043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51517043 is an equidigital number, since it uses as much as digits as its factorization.

51517043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 51517043 is about 7177.5373910555. The cubic root of 51517043 is about 372.0919797028.

Adding to 51517043 its reverse (34071515), we get a palindrome (85588558).

The spelling of 51517043 in words is "fifty-one million, five hundred seventeen thousand, forty-three".