51712011 has 24 divisors (see below), whose sum is σ = 85176000. Its totient is φ = 29949696.

The previous prime is 51712009. The next prime is 51712019. The reversal of 51712011 is 11021715.

It is a happy number.

It is not a de Polignac number, because 51712011 - 2¹ = 51712009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51712019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11011 + ... + 14988.

It is an arithmetic number, because the mean of its divisors is an integer number (3549000).

Almost surely, 2^51712011 is an apocalyptic number.

51712011 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

51712011 is a deficient number, since it is larger than the sum of its proper divisors (33463989).

51712011 is a wasteful number, since it uses less digits than its factorization.

51712011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26035 (or 26032 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 51712011 is about 7191.1063821918. The cubic root of 51712011 is about 372.5607870409.

Adding to 51712011 its reverse (11021715), we get a palindrome (62733726).

The spelling of 51712011 in words is "fifty-one million, seven hundred twelve thousand, eleven".