20554100 has 36 divisors (see below), whose sum is σ = 50975904. Its totient is φ = 7046880.

The previous prime is 20554097. The next prime is 20554109. The reversal of 20554100 is 145502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13982 + ... + 15381.

Almost surely, 2^20554100 is an apocalyptic number.

20554100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20554100 is an abundant number, since it is smaller than the sum of its proper divisors (30421804).

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

20554100 is a wasteful number, since it uses less digits than its factorization.

20554100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29384 (or 29377 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 20554100 is about 4533.6629782109. The cubic root of 20554100 is about 273.9257262231.

Adding to 20554100 its reverse (145502), we get a palindrome (20699602).

The spelling of 20554100 in words is "twenty million, five hundred fifty-four thousand, one hundred".