51711242 has 16 divisors (see below), whose sum is σ = 84780864. Its totient is φ = 23460000.

The previous prime is 51711181. The next prime is 51711251. The reversal of 51711242 is 24211715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11267 + ... + 15177.

It is an arithmetic number, because the mean of its divisors is an integer number (5298804).

Almost surely, 2^51711242 is an apocalyptic number.

51711242 is a deficient number, since it is larger than the sum of its proper divisors (33069622).

51711242 is a wasteful number, since it uses less digits than its factorization.

51711242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525.

The product of its digits is 560, while the sum is 23.

The square root of 51711242 is about 7191.0529131693. The cubic root of 51711242 is about 372.5589402703.

Adding to 51711242 its reverse (24211715), we get a palindrome (75922957).

The spelling of 51711242 in words is "fifty-one million, seven hundred eleven thousand, two hundred forty-two".