20553552 has 30 divisors (see below), whose sum is σ = 57521802. Its totient is φ = 6851136.

The previous prime is 20553529. The next prime is 20553557. The reversal of 20553552 is 25535502.

20553552 is nontrivially palindromic in base 5.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 7420176 = 3624^2 + 2724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71223 + ... + 71510.

Almost surely, 2^20553552 is an apocalyptic number.

It is an amenable number.

20553552 is an abundant number, since it is smaller than the sum of its proper divisors (36968250).

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

20553552 is a wasteful number, since it uses less digits than its factorization.

20553552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142747 (or 142738 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 20553552 is about 4533.6025410263. The cubic root of 20553552 is about 273.9232917918.

The spelling of 20553552 in words is "twenty million, five hundred fifty-three thousand, five hundred fifty-two".