205531150 has 24 divisors (see below), whose sum is σ = 417042504. Its totient is φ = 74738400.

The previous prime is 205531121. The next prime is 205531153. The reversal of 205531150 is 51135502.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205531153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186297 + ... + 187396.

It is an arithmetic number, because the mean of its divisors is an integer number (17376771).

Almost surely, 2^205531150 is an apocalyptic number.

205531150 is an abundant number, since it is smaller than the sum of its proper divisors (211511354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205531150 is a wasteful number, since it uses less digits than its factorization.

205531150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373716 (or 373711 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 205531150 is about 14336.3576266777. The cubic root of 205531150 is about 590.1456597178.

Adding to 205531150 its reverse (51135502), we get a palindrome (256666652).

The spelling of 205531150 in words is "two hundred five million, five hundred thirty-one thousand, one hundred fifty".