20555152 has 20 divisors (see below), whose sum is σ = 40181580. Its totient is φ = 10185728.

The previous prime is 20555147. The next prime is 20555167. The reversal of 20555152 is 25155502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 15872256 = 2164^2 + 3984^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3877 + ... + 7492.

It is an arithmetic number, because the mean of its divisors is an integer number (2009079).

Almost surely, 2^20555152 is an apocalyptic number.

It is an amenable number.

20555152 is a deficient number, since it is larger than the sum of its proper divisors (19626428).

20555152 is a wasteful number, since it uses less digits than its factorization.

20555152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11490 (or 11484 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 20555152 is about 4533.7789977016. The cubic root of 20555152 is about 273.9303994991.

The spelling of 20555152 in words is "twenty million, five hundred fifty-five thousand, one hundred fifty-two".