205116455 has 4 divisors (see below), whose sum is σ = 246139752. Its totient is φ = 164093160.

The previous prime is 205116427. The next prime is 205116463. The reversal of 205116455 is 554611502.

It is a happy number.

205116455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 205116455 - 2¹² = 205112359 is a prime.

It is a super-2 number, since 2×205116455² = 84145520223534050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20511641 + ... + 20511650.

It is an arithmetic number, because the mean of its divisors is an integer number (61534938).

Almost surely, 2^205116455 is an apocalyptic number.

205116455 is a deficient number, since it is larger than the sum of its proper divisors (41023297).

205116455 is an equidigital number, since it uses as much as digits as its factorization.

205116455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41023296.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 205116455 is about 14321.8872708872. The cubic root of 205116455 is about 589.7484851539.

Adding to 205116455 its reverse (554611502), we get a palindrome (759727957).

The spelling of 205116455 in words is "two hundred five million, one hundred sixteen thousand, four hundred fifty-five".