51995671 has 8 divisors (see below), whose sum is σ = 63994784. Its totient is φ = 41139360.

The previous prime is 51995659. The next prime is 51995681. The reversal of 51995671 is 17659915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51995671 - 2⁷ = 51995543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51995611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285600 + ... + 285781.

It is an arithmetic number, because the mean of its divisors is an integer number (7999348).

Almost surely, 2^51995671 is an apocalyptic number.

51995671 is a deficient number, since it is larger than the sum of its proper divisors (11999113).

51995671 is a wasteful number, since it uses less digits than its factorization.

51995671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571401.

The product of its digits is 85050, while the sum is 43.

The square root of 51995671 is about 7210.8023825369. The cubic root of 51995671 is about 373.2407576758.

The spelling of 51995671 in words is "fifty-one million, nine hundred ninety-five thousand, six hundred seventy-one".