20550054 has 32 divisors (see below), whose sum is σ = 47773440. Its totient is φ = 5771232.

The previous prime is 20550041. The next prime is 20550071. The reversal of 20550054 is 45005502.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 20550054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1669 + ... + 6624.

It is an arithmetic number, because the mean of its divisors is an integer number (1492920).

Almost surely, 2^20550054 is an apocalyptic number.

20550054 is an abundant number, since it is smaller than the sum of its proper divisors (27223386).

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

20550054 is a wasteful number, since it uses less digits than its factorization.

20550054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364.

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

The square root of 20550054 is about 4533.2167386967. The cubic root of 20550054 is about 273.9077512818.

Adding to 20550054 its reverse (45005502), we get a palindrome (65555556).

The spelling of 20550054 in words is "twenty million, five hundred fifty thousand, fifty-four".