51417547 has 2 divisors, whose sum is σ = 51417548. Its totient is φ = 51417546.

The previous prime is 51417529. The next prime is 51417557. The reversal of 51417547 is 74571415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51417547 is a prime.

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, 25708773 + 25708774.

It is an arithmetic number, because the mean of its divisors is an integer number (25708774).

Almost surely, 2^51417547 is an apocalyptic number.

51417547 is a deficient number, since it is larger than the sum of its proper divisors (1).

51417547 is an equidigital number, since it uses as much as digits as its factorization.

51417547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19600, while the sum is 34.

The square root of 51417547 is about 7170.6029732513. The cubic root of 51417547 is about 371.8522821797.

The spelling of 51417547 in words is "fifty-one million, four hundred seventeen thousand, five hundred forty-seven".