51171001 has 8 divisors (see below), whose sum is σ = 58788864. Its totient is φ = 43630080.

The previous prime is 51170939. The next prime is 51171011. The reversal of 51171001 is 10017115.

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 51171001 - 2⁹ = 51170489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51171011) 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, 17800 + ... + 20473.

It is an arithmetic number, because the mean of its divisors is an integer number (7348608).

Almost surely, 2^51171001 is an apocalyptic number.

It is an amenable number.

51171001 is a deficient number, since it is larger than the sum of its proper divisors (7617863).

51171001 is a wasteful number, since it uses less digits than its factorization.

51171001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38471.

The product of its (nonzero) digits is 35, while the sum is 16.

The square root of 51171001 is about 7153.3908742638. The cubic root of 51171001 is about 371.2569885355.

Adding to 51171001 its reverse (10017115), we get a palindrome (61188116).

The spelling of 51171001 in words is "fifty-one million, one hundred seventy-one thousand, one".