51253171 has 4 divisors (see below), whose sum is σ = 52343712. Its totient is φ = 50162632.

The previous prime is 51253133. The next prime is 51253183. The reversal of 51253171 is 17135215.

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 51253171 - 2⁷ = 51253043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51253271) 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, 545200 + ... + 545293.

It is an arithmetic number, because the mean of its divisors is an integer number (13085928).

Almost surely, 2^51253171 is an apocalyptic number.

51253171 is a deficient number, since it is larger than the sum of its proper divisors (1090541).

51253171 is a wasteful number, since it uses less digits than its factorization.

51253171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090540.

The product of its digits is 1050, while the sum is 25.

The square root of 51253171 is about 7159.1320004593. The cubic root of 51253171 is about 371.4556028016.

Adding to 51253171 its reverse (17135215), we get a palindrome (68388386).

The spelling of 51253171 in words is "fifty-one million, two hundred fifty-three thousand, one hundred seventy-one".