20555452 has 6 divisors (see below), whose sum is σ = 35972048. Its totient is φ = 10277724.

The previous prime is 20555443. The next prime is 20555453. The reversal of 20555452 is 25455502.

It is a self number, because there is not a number n which added to its sum of digits gives 20555452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20555453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2569428 + ... + 2569435.

Almost surely, 2^20555452 is an apocalyptic number.

It is an amenable number.

20555452 is a deficient number, since it is larger than the sum of its proper divisors (15416596).

20555452 is a wasteful number, since it uses less digits than its factorization.

20555452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138867 (or 5138865 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 20555452 is about 4533.8120825636. The cubic root of 20555452 is about 273.9317321531.

The spelling of 20555452 in words is "twenty million, five hundred fifty-five thousand, four hundred fifty-two".