206440053 has 8 divisors (see below), whose sum is σ = 275520000. Its totient is φ = 137493408.

The previous prime is 206440051. The next prime is 206440081. The reversal of 206440053 is 350044602.

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

It is not a de Polignac number, because 206440053 - 2¹ = 206440051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206440051) 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, 29653 + ... + 35946.

It is an arithmetic number, because the mean of its divisors is an integer number (34440000).

Almost surely, 2^206440053 is an apocalyptic number.

It is an amenable number.

206440053 is a deficient number, since it is larger than the sum of its proper divisors (69079947).

206440053 is a wasteful number, since it uses less digits than its factorization.

206440053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66651.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 206440053 is about 14368.0218889031. The cubic root of 206440053 is about 591.0142975976.

Adding to 206440053 its reverse (350044602), we get a palindrome (556484655).

The spelling of 206440053 in words is "two hundred six million, four hundred forty thousand, fifty-three".