20553124 has 24 divisors (see below), whose sum is σ = 37594368. Its totient is φ = 9820320.

The previous prime is 20553107. The next prime is 20553133. The reversal of 20553124 is 42135502.

It is a junction number, because it is equal to n+sod(n) for n = 20553095 and 20553104.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9294 + ... + 11290.

It is an arithmetic number, because the mean of its divisors is an integer number (1566432).

Almost surely, 2^20553124 is an apocalyptic number.

It is an amenable number.

20553124 is a deficient number, since it is larger than the sum of its proper divisors (17041244).

20553124 is a wasteful number, since it uses less digits than its factorization.

20553124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20553124 is about 4533.5553377013. Note that the first 3 decimals coincide. The cubic root of 20553124 is about 273.9213904176.

Adding to 20553124 its reverse (42135502), we get a palindrome (62688626).

The spelling of 20553124 in words is "twenty million, five hundred fifty-three thousand, one hundred twenty-four".