20552829 has 8 divisors (see below), whose sum is σ = 29895072. Its totient is φ = 12456240.

The previous prime is 20552821. The next prime is 20552837. The reversal of 20552829 is 92825502.

It is an interprime number because it is at equal distance from previous prime (20552821) and next prime (20552837).

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

It is not a de Polignac number, because 20552829 - 2³ = 20552821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 622813 = 20552829 / (2 + 0 + 5 + 5 + 2 + 8 + 2 + 9).

It is a self number, because there is not a number n which added to its sum of digits gives 20552829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311374 + ... + 311439.

It is an arithmetic number, because the mean of its divisors is an integer number (3736884).

Almost surely, 2^20552829 is an apocalyptic number.

It is an amenable number.

20552829 is a deficient number, since it is larger than the sum of its proper divisors (9342243).

20552829 is a wasteful number, since it uses less digits than its factorization.

20552829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622827.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 20552829 is about 4533.5228024132. The cubic root of 20552829 is about 273.9200798756.

It can be divided in two parts, 2055 and 2829, that added together give a palindrome (4884).

The spelling of 20552829 in words is "twenty million, five hundred fifty-two thousand, eight hundred twenty-nine".