20051164 has 24 divisors (see below), whose sum is σ = 40197248. Its totient is φ = 8573040.

The previous prime is 20051159. The next prime is 20051179. The reversal of 20051164 is 46115002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22267 + ... + 23149.

Almost surely, 2^20051164 is an apocalyptic number.

It is an amenable number.

20051164 is an abundant number, since it is smaller than the sum of its proper divisors (20146084).

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

20051164 is a wasteful number, since it uses less digits than its factorization.

20051164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20051164 is about 4477.8526103480. The cubic root of 20051164 is about 271.6730319978.

Adding to 20051164 its reverse (46115002), we get a palindrome (66166166).

The spelling of 20051164 in words is "twenty million, fifty-one thousand, one hundred sixty-four".