206403053 has 8 divisors (see below), whose sum is σ = 218017536. Its totient is φ = 195098400.

The previous prime is 206403037. The next prime is 206403059. The reversal of 206403053 is 350304602.

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 206403053 - 2⁴ = 206403037 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 (206403059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76088 + ... + 78753.

It is an arithmetic number, because the mean of its divisors is an integer number (27252192).

Almost surely, 2^206403053 is an apocalyptic number.

It is an amenable number.

206403053 is a deficient number, since it is larger than the sum of its proper divisors (11614483).

206403053 is a wasteful number, since it uses less digits than its factorization.

206403053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154915.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 206403053 is about 14366.7342496477. The cubic root of 206403053 is about 590.9789865630.

Adding to 206403053 its reverse (350304602), we get a palindrome (556707655).

The spelling of 206403053 in words is "two hundred six million, four hundred three thousand, fifty-three".