20554011 has 24 divisors (see below), whose sum is σ = 31240560. Its totient is φ = 13003200.

The previous prime is 20553989. The next prime is 20554013. The reversal of 20554011 is 11045502.

It is not a de Polignac number, because 20554011 - 2⁵ = 20553979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20554013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15276 + ... + 16566.

It is an arithmetic number, because the mean of its divisors is an integer number (1301690).

Almost surely, 2^20554011 is an apocalyptic number.

20554011 is a deficient number, since it is larger than the sum of its proper divisors (10686549).

20554011 is a wasteful number, since it uses less digits than its factorization.

20554011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 20554011 is about 4533.6531627375. The cubic root of 20554011 is about 273.9253308530.

Adding to 20554011 its reverse (11045502), we get a palindrome (31599513).

The spelling of 20554011 in words is "twenty million, five hundred fifty-four thousand, eleven".