205412153 has 8 divisors (see below), whose sum is σ = 209537928. Its totient is φ = 201295744.

The previous prime is 205412143. The next prime is 205412177. The reversal of 205412153 is 351214502.

It can be written as a sum of positive squares in 4 ways, for example, as 59413264 + 145998889 = 7708^2 + 12083^2 .

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 205412153 - 2¹⁸ = 205150009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205412143) 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, 56375 + ... + 59907.

It is an arithmetic number, because the mean of its divisors is an integer number (26192241).

Almost surely, 2^205412153 is an apocalyptic number.

It is an amenable number.

205412153 is a deficient number, since it is larger than the sum of its proper divisors (4125775).

205412153 is a wasteful number, since it uses less digits than its factorization.

205412153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 205412153 is about 14332.2068433302. The cubic root of 205412153 is about 590.0317449165.

Adding to 205412153 its reverse (351214502), we get a palindrome (556626655).

The spelling of 205412153 in words is "two hundred five million, four hundred twelve thousand, one hundred fifty-three".