51180017 has 4 divisors (see below), whose sum is σ = 58491456. Its totient is φ = 43868580.

The previous prime is 51180011. The next prime is 51180067. The reversal of 51180017 is 71008115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51180017 - 2⁴ = 51180001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51179974 and 51180001.

It is not an unprimeable number, because it can be changed into a prime (51180011) 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, 3655709 + ... + 3655722.

It is an arithmetic number, because the mean of its divisors is an integer number (14622864).

Almost surely, 2^51180017 is an apocalyptic number.

It is an amenable number.

51180017 is a deficient number, since it is larger than the sum of its proper divisors (7311439).

51180017 is an equidigital number, since it uses as much as digits as its factorization.

51180017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7311438.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 51180017 is about 7154.0210371511. The cubic root of 51180017 is about 371.2787916165.

The spelling of 51180017 in words is "fifty-one million, one hundred eighty thousand, seventeen".