51566159 has 8 divisors (see below), whose sum is σ = 52939392. Its totient is φ = 50200920.

The previous prime is 51566153. The next prime is 51566201. The reversal of 51566159 is 95166515.

It is a happy number.

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 51566159 - 2⁸ = 51565903 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 (51566153) 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, 12422 + ... + 16044.

It is an arithmetic number, because the mean of its divisors is an integer number (6617424).

Almost surely, 2^51566159 is an apocalyptic number.

51566159 is a deficient number, since it is larger than the sum of its proper divisors (1373233).

51566159 is a wasteful number, since it uses less digits than its factorization.

51566159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997.

The product of its digits is 40500, while the sum is 38.

The square root of 51566159 is about 7180.9580837100. The cubic root of 51566159 is about 372.2101921345.

The spelling of 51566159 in words is "fifty-one million, five hundred sixty-six thousand, one hundred fifty-nine".