51517071 has 12 divisors (see below), whose sum is σ = 76814400. Its totient is φ = 33236640.

The previous prime is 51517051. The next prime is 51517073. The reversal of 51517071 is 17071515.

It is not a de Polignac number, because 51517071 - 2⁷ = 51516943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51517073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92046 + ... + 92603.

It is an arithmetic number, because the mean of its divisors is an integer number (6401200).

Almost surely, 2^51517071 is an apocalyptic number.

51517071 is a deficient number, since it is larger than the sum of its proper divisors (25297329).

51517071 is a wasteful number, since it uses less digits than its factorization.

51517071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184686 (or 184683 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 27.

The square root of 51517071 is about 7177.5393415850. The cubic root of 51517071 is about 372.0920471146.

Adding to 51517071 its reverse (17071515), we get a palindrome (68588586).

The spelling of 51517071 in words is "fifty-one million, five hundred seventeen thousand, seventy-one".