205151506 has 8 divisors (see below), whose sum is σ = 351688320. Its totient is φ = 87922068.

The previous prime is 205151501. The next prime is 205151579. The reversal of 205151506 is 605151502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (205151501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7326826 + ... + 7326853.

It is an arithmetic number, because the mean of its divisors is an integer number (43961040).

Almost surely, 2^205151506 is an apocalyptic number.

205151506 is a deficient number, since it is larger than the sum of its proper divisors (146536814).

205151506 is a wasteful number, since it uses less digits than its factorization.

205151506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14653688.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 205151506 is about 14323.1109051072. The cubic root of 205151506 is about 589.7820759853.

The spelling of 205151506 in words is "two hundred five million, one hundred fifty-one thousand, five hundred six".