51166257 has 8 divisors (see below), whose sum is σ = 68262240. Its totient is φ = 34090560.

The previous prime is 51166231. The next prime is 51166261. The reversal of 51166257 is 75266115.

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

It is not a de Polignac number, because 51166257 - 2¹¹ = 51164209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51166217) 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, 2382 + ... + 10392.

It is an arithmetic number, because the mean of its divisors is an integer number (8532780).

Almost surely, 2^51166257 is an apocalyptic number.

It is an amenable number.

51166257 is a deficient number, since it is larger than the sum of its proper divisors (17095983).

51166257 is a wasteful number, since it uses less digits than its factorization.

51166257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143.

The product of its digits is 12600, while the sum is 33.

The square root of 51166257 is about 7153.0592755827. The cubic root of 51166257 is about 371.2455152561.

The spelling of 51166257 in words is "fifty-one million, one hundred sixty-six thousand, two hundred fifty-seven".