205553023 has 16 divisors (see below), whose sum is σ = 227404800. Its totient is φ = 184635360.

The previous prime is 205553021. The next prime is 205553041. The reversal of 205553023 is 320355502.

It is not a de Polignac number, because 205553023 - 2¹ = 205553021 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 (205553021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71508 + ... + 74326.

It is an arithmetic number, because the mean of its divisors is an integer number (14212800).

Almost surely, 2^205553023 is an apocalyptic number.

205553023 is a deficient number, since it is larger than the sum of its proper divisors (21851777).

205553023 is a wasteful number, since it uses less digits than its factorization.

205553023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 205553023 is about 14337.1204570513. The cubic root of 205553023 is about 590.1665937678.

The spelling of 205553023 in words is "two hundred five million, five hundred fifty-three thousand, twenty-three".