51742171 has 8 divisors (see below), whose sum is σ = 55792800. Its totient is φ = 47701632.

The previous prime is 51742147. The next prime is 51742183. The reversal of 51742171 is 17124715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51742171 - 2⁵ = 51742139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51742121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10755 + ... + 14803.

It is an arithmetic number, because the mean of its divisors is an integer number (6974100).

Almost surely, 2^51742171 is an apocalyptic number.

51742171 is a deficient number, since it is larger than the sum of its proper divisors (4050629).

51742171 is a wasteful number, since it uses less digits than its factorization.

51742171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045.

The product of its digits is 1960, while the sum is 28.

The square root of 51742171 is about 7193.2031112711. The cubic root of 51742171 is about 372.6332025162.

Adding to 51742171 its reverse (17124715), we get a palindrome (68866886).

The spelling of 51742171 in words is "fifty-one million, seven hundred forty-two thousand, one hundred seventy-one".