20522552 has 8 divisors (see below), whose sum is σ = 38479800. Its totient is φ = 10261272.

The previous prime is 20522549. The next prime is 20522609. The reversal of 20522552 is 25522502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1282652 + ... + 1282667.

It is an arithmetic number, because the mean of its divisors is an integer number (4809975).

Almost surely, 2^20522552 is an apocalyptic number.

It is an amenable number.

20522552 is a deficient number, since it is larger than the sum of its proper divisors (17957248).

20522552 is a wasteful number, since it uses less digits than its factorization.

20522552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565325 (or 2565321 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 20522552 is about 4530.1823362863. The cubic root of 20522552 is about 273.7855070948.

The spelling of 20522552 in words is "twenty million, five hundred twenty-two thousand, five hundred fifty-two".