51325871 has 4 divisors (see below), whose sum is σ = 51469200. Its totient is φ = 51182544.

The previous prime is 51325849. The next prime is 51325909. The reversal of 51325871 is 17852315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51325871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51325171) 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, 71126 + ... + 71843.

It is an arithmetic number, because the mean of its divisors is an integer number (12867300).

Almost surely, 2^51325871 is an apocalyptic number.

51325871 is a deficient number, since it is larger than the sum of its proper divisors (143329).

51325871 is a wasteful number, since it uses less digits than its factorization.

51325871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143328.

The product of its digits is 8400, while the sum is 32.

The square root of 51325871 is about 7164.2076323903. The cubic root of 51325871 is about 371.6311500802.

The spelling of 51325871 in words is "fifty-one million, three hundred twenty-five thousand, eight hundred seventy-one".