205516023 has 8 divisors (see below), whose sum is σ = 274100736. Its totient is φ = 136971000.

The previous prime is 205515997. The next prime is 205516037. The reversal of 205516023 is 320615502.

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

It is not a de Polignac number, because 205516023 - 2⁵ = 205515991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205515984 and 205516002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205516123) 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, 5658 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (34262592).

Almost surely, 2^205516023 is an apocalyptic number.

205516023 is a deficient number, since it is larger than the sum of its proper divisors (68584713).

205516023 is a wasteful number, since it uses less digits than its factorization.

205516023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19845.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 205516023 is about 14335.8300422403. The cubic root of 205516023 is about 590.1311812110.

The spelling of 205516023 in words is "two hundred five million, five hundred sixteen thousand, twenty-three".