20122553 has 8 divisors (see below), whose sum is σ = 22179360. Its totient is φ = 18103680.

The previous prime is 20122541. The next prime is 20122559. The reversal of 20122553 is 35522102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122559) 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 7 ways as a sum of consecutive naturals, for example, 8363 + ... + 10496.

It is an arithmetic number, because the mean of its divisors is an integer number (2772420).

Almost surely, 2^20122553 is an apocalyptic number.

It is an amenable number.

20122553 is a deficient number, since it is larger than the sum of its proper divisors (2056807).

20122553 is a wasteful number, since it uses less digits than its factorization.

20122553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18967.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20122553 is about 4485.8168709835. The cubic root of 20122553 is about 271.9950664114.

Adding to 20122553 its reverse (35522102), we get a palindrome (55644655).

The spelling of 20122553 in words is "twenty million, one hundred twenty-two thousand, five hundred fifty-three".