205324251 has 16 divisors (see below), whose sum is σ = 299354880. Its totient is φ = 124146720.

The previous prime is 205324237. The next prime is 205324271. The reversal of 205324251 is 152423502.

It is not a de Polignac number, because 205324251 - 2⁷ = 205324123 is a prime.

It is a super-2 number, since 2×205324251² = 84316096097422002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205324271) 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, 7401 + ... + 21573.

It is an arithmetic number, because the mean of its divisors is an integer number (18709680).

Almost surely, 2^205324251 is an apocalyptic number.

205324251 is a deficient number, since it is larger than the sum of its proper divisors (94030629).

205324251 is a wasteful number, since it uses less digits than its factorization.

205324251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14626.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 205324251 is about 14329.1399253409. The cubic root of 205324251 is about 589.9475688350.

Adding to 205324251 its reverse (152423502), we get a palindrome (357747753).

The spelling of 205324251 in words is "two hundred five million, three hundred twenty-four thousand, two hundred fifty-one".