51742271 has 12 divisors (see below), whose sum is σ = 62819568. Its totient is φ = 41740032.

The previous prime is 51742267. The next prime is 51742279. The reversal of 51742271 is 17224715.

It is not a de Polignac number, because 51742271 - 2² = 51742267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51742279) 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, 10766 + ... + 14811.

It is an arithmetic number, because the mean of its divisors is an integer number (5234964).

Almost surely, 2^51742271 is an apocalyptic number.

51742271 is a deficient number, since it is larger than the sum of its proper divisors (11077297).

51742271 is a wasteful number, since it uses less digits than its factorization.

51742271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25618 (or 25601 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 51742271 is about 7193.2100622740. The cubic root of 51742271 is about 372.6334425738.

Adding to 51742271 its reverse (17224715), we get a palindrome (68966986).

The spelling of 51742271 in words is "fifty-one million, seven hundred forty-two thousand, two hundred seventy-one".