51017371 has 4 divisors (see below), whose sum is σ = 51108552. Its totient is φ = 50926192.

The previous prime is 51017363. The next prime is 51017377. The reversal of 51017371 is 17371015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51017371 - 2³ = 51017363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51017377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44746 + ... + 45871.

It is an arithmetic number, because the mean of its divisors is an integer number (12777138).

Almost surely, 2^51017371 is an apocalyptic number.

51017371 is a deficient number, since it is larger than the sum of its proper divisors (91181).

51017371 is an equidigital number, since it uses as much as digits as its factorization.

51017371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91180.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 51017371 is about 7142.6445382645. The cubic root of 51017371 is about 370.8850761560.

Adding to 51017371 its reverse (17371015), we get a palindrome (68388386).

The spelling of 51017371 in words is "fifty-one million, seventeen thousand, three hundred seventy-one".