20552783 has 8 divisors (see below), whose sum is σ = 21290496. Its totient is φ = 19819800.

The previous prime is 20552773. The next prime is 20552801. The reversal of 20552783 is 38725502.

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

It is a cyclic number.

It is not a de Polignac number, because 20552783 - 2⁸ = 20552527 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 (20552773) 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, 9260 + ... + 11262.

It is an arithmetic number, because the mean of its divisors is an integer number (2661312).

Almost surely, 2^20552783 is an apocalyptic number.

20552783 is a deficient number, since it is larger than the sum of its proper divisors (737713).

20552783 is a wasteful number, since it uses less digits than its factorization.

20552783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 20552783 is about 4533.5177290929. The cubic root of 20552783 is about 273.9198755187.

The spelling of 20552783 in words is "twenty million, five hundred fifty-two thousand, seven hundred eighty-three".