51061171 has 4 divisors (see below), whose sum is σ = 58355632. Its totient is φ = 43766712.

The previous prime is 51061139. The next prime is 51061193. The reversal of 51061171 is 17116015.

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 51061171 - 2⁵ = 51061139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51061111) 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, 3647220 + ... + 3647233.

It is an arithmetic number, because the mean of its divisors is an integer number (14588908).

Almost surely, 2^51061171 is an apocalyptic number.

51061171 is a deficient number, since it is larger than the sum of its proper divisors (7294461).

51061171 is an equidigital number, since it uses as much as digits as its factorization.

51061171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294460.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 51061171 is about 7145.7099717243. The cubic root of 51061171 is about 370.9911845877.

Adding to 51061171 its reverse (17116015), we get a palindrome (68177186).

The spelling of 51061171 in words is "fifty-one million, sixty-one thousand, one hundred seventy-one".