51701166 has 96 divisors (see below), whose sum is σ = 133660800. Its totient is φ = 14813280.

The previous prime is 51701161. The next prime is 51701227. The reversal of 51701166 is 66110715.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51701161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101320 + ... + 101828.

It is an arithmetic number, because the mean of its divisors is an integer number (1392300).

Almost surely, 2^51701166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51701166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66830400).

51701166 is an abundant number, since it is smaller than the sum of its proper divisors (81959634).

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

51701166 is a wasteful number, since it uses less digits than its factorization.

51701166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51701166 is about 7190.3522862235. The cubic root of 51701166 is about 372.5347408404.

It can be divided in two parts, 5170 and 1166, that added together give a palindrome (6336).

The spelling of 51701166 in words is "fifty-one million, seven hundred one thousand, one hundred sixty-six".