20522253 has 8 divisors (see below), whose sum is σ = 27385600. Its totient is φ = 13670208.

The previous prime is 20522251. The next prime is 20522287. The reversal of 20522253 is 35222502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20522253 - 2¹ = 20522251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522251) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3333 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (3423200).

Almost surely, 2^20522253 is an apocalyptic number.

It is an amenable number.

20522253 is a deficient number, since it is larger than the sum of its proper divisors (6863347).

20522253 is a wasteful number, since it uses less digits than its factorization.

20522253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20522253 is about 4530.1493352869. The cubic root of 20522253 is about 273.7841774638.

Adding to 20522253 its reverse (35222502), we get a palindrome (55744755).

The spelling of 20522253 in words is "twenty million, five hundred twenty-two thousand, two hundred fifty-three".