20050554 has 16 divisors (see below), whose sum is σ = 40700448. Its totient is φ = 6583632.

The previous prime is 20050523. The next prime is 20050561. The reversal of 20050554 is 45505002.

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 20050554.

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, 24537 + ... + 25340.

It is an arithmetic number, because the mean of its divisors is an integer number (2543778).

Almost surely, 2^20050554 is an apocalyptic number.

20050554 is an abundant number, since it is smaller than the sum of its proper divisors (20649894).

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

20050554 is a wasteful number, since it uses less digits than its factorization.

20050554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49949.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 20050554 is about 4477.7844968243. The cubic root of 20050554 is about 271.6702770084.

Adding to 20050554 its reverse (45505002), we get a palindrome (65555556).

The spelling of 20050554 in words is "twenty million, fifty thousand, five hundred fifty-four".