20181054 has 16 divisors (see below), whose sum is σ = 40545792. Its totient is φ = 6696408.

The previous prime is 20181053. The next prime is 20181079. The reversal of 20181054 is 45018102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20181054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20181053) 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, 6204 + ... + 8879.

It is an arithmetic number, because the mean of its divisors is an integer number (2534112).

Almost surely, 2^20181054 is an apocalyptic number.

20181054 is an abundant number, since it is smaller than the sum of its proper divisors (20364738).

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

20181054 is a wasteful number, since it uses less digits than its factorization.

20181054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15311.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 20181054 is about 4492.3328015631. The cubic root of 20181054 is about 272.2583959580.

Adding to 20181054 its reverse (45018102), we get a palindrome (65199156).

The spelling of 20181054 in words is "twenty million, one hundred eighty-one thousand, fifty-four".