20000554 has 16 divisors (see below), whose sum is σ = 34517376. Its totient is φ = 8514000.

The previous prime is 20000543. The next prime is 20000567. The reversal of 20000554 is 45500002.

It is a happy number.

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, 2617 + ... + 6844.

It is an arithmetic number, because the mean of its divisors is an integer number (2157336).

Almost surely, 2^20000554 is an apocalyptic number.

20000554 is a deficient number, since it is larger than the sum of its proper divisors (14516822).

20000554 is a wasteful number, since it uses less digits than its factorization.

20000554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9621.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 20000554 is about 4472.1978936536. The cubic root of 20000554 is about 271.4442679486. Note that the first 3 decimals are identical.

Adding to 20000554 its reverse (45500002), we get a palindrome (65500556).

The spelling of 20000554 in words is "twenty million, five hundred fifty-four", and thus it is an aban number.