51666160 has 160 divisors (see below), whose sum is σ = 151990272. Its totient is φ = 15897600.

The previous prime is 51666157. The next prime is 51666163. The reversal of 51666160 is 6166615.

It is an interprime number because it is at equal distance from previous prime (51666157) and next prime (51666163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51666163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342085 + ... + 342235.

Almost surely, 2^51666160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51666160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75995136).

51666160 is an abundant number, since it is smaller than the sum of its proper divisors (100324112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51666160 is a wasteful number, since it uses less digits than its factorization.

51666160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 51666160 is about 7187.9176400401. The cubic root of 51666160 is about 372.4506428305.

The spelling of 51666160 in words is "fifty-one million, six hundred sixty-six thousand, one hundred sixty".