205054215 has 16 divisors (see below), whose sum is σ = 339400800. Its totient is φ = 105590912.

The previous prime is 205054211. The next prime is 205054219. The reversal of 205054215 is 512450502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (205054211) and next prime (205054219).

It is a cyclic number.

It is not a de Polignac number, because 205054215 - 2² = 205054211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205054211) 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, 235260 + ... + 236129.

It is an arithmetic number, because the mean of its divisors is an integer number (21212550).

Almost surely, 2^205054215 is an apocalyptic number.

205054215 is a deficient number, since it is larger than the sum of its proper divisors (134346585).

205054215 is a wasteful number, since it uses less digits than its factorization.

205054215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471426.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 205054215 is about 14319.7142080420. The cubic root of 205054215 is about 589.6888285408.

It can be divided in two parts, 2050 and 54215, that added together give a palindrome (56265).

The spelling of 205054215 in words is "two hundred five million, fifty-four thousand, two hundred fifteen".