155430205 has 24 divisors (see below), whose sum is σ = 226409472. Its totient is φ = 101943072.

The previous prime is 155430179. The next prime is 155430239. The reversal of 155430205 is 502034551.

It is not a de Polignac number, because 155430205 - 2⁵ = 155430173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155430205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8157 + ... + 19426.

It is an arithmetic number, because the mean of its divisors is an integer number (9433728).

Almost surely, 2^155430205 is an apocalyptic number.

It is an amenable number.

155430205 is a deficient number, since it is larger than the sum of its proper divisors (70979267).

155430205 is a wasteful number, since it uses less digits than its factorization.

155430205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27625 (or 27618 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 155430205 is about 12467.1650747072. The cubic root of 155430205 is about 537.6650497278.

Adding to 155430205 its reverse (502034551), we get a palindrome (657464756).

The spelling of 155430205 in words is "one hundred fifty-five million, four hundred thirty thousand, two hundred five".