51417511 has 2 divisors, whose sum is σ = 51417512. Its totient is φ = 51417510.

The previous prime is 51417491. The next prime is 51417517. The reversal of 51417511 is 11571415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51417511 - 2¹⁷ = 51286439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51417517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25708755 + 25708756.

It is an arithmetic number, because the mean of its divisors is an integer number (25708756).

Almost surely, 2^51417511 is an apocalyptic number.

51417511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51417511 is an equidigital number, since it uses as much as digits as its factorization.

51417511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 700, while the sum is 25.

The square root of 51417511 is about 7170.6004630017. The cubic root of 51417511 is about 371.8521953956.

Adding to 51417511 its reverse (11571415), we get a palindrome (62988926).

The spelling of 51417511 in words is "fifty-one million, four hundred seventeen thousand, five hundred eleven".