205101530 has 32 divisors (see below), whose sum is σ = 376455168. Its totient is φ = 80438400.

The previous prime is 205101521. The next prime is 205101563. The reversal of 205101530 is 35101502.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205101499 and 205101508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138695 + ... + 140165.

It is an arithmetic number, because the mean of its divisors is an integer number (11764224).

Almost surely, 2^205101530 is an apocalyptic number.

205101530 is a deficient number, since it is larger than the sum of its proper divisors (171353638).

205101530 is a wasteful number, since it uses less digits than its factorization.

205101530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 205101530 is about 14321.3662057780. The cubic root of 205101530 is about 589.7341807438.

The spelling of 205101530 in words is "two hundred five million, one hundred one thousand, five hundred thirty".