20161254 has 8 divisors (see below), whose sum is σ = 40322520. Its totient is φ = 6720416.

The previous prime is 20161243. The next prime is 20161277. The reversal of 20161254 is 45216102.

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

20161254 is an admirable number.

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 20161254.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680099 + ... + 1680110.

It is an arithmetic number, because the mean of its divisors is an integer number (5040315).

Almost surely, 2^20161254 is an apocalyptic number.

20161254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20161254 is a wasteful number, since it uses less digits than its factorization.

20161254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360214.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20161254 is about 4490.1285059561. The cubic root of 20161254 is about 272.1693275975.

Adding to 20161254 its reverse (45216102), we get a palindrome (65377356).

The spelling of 20161254 in words is "twenty million, one hundred sixty-one thousand, two hundred fifty-four".