155212204 has 18 divisors (see below), whose sum is σ = 315968100. Its totient is φ = 66519432.

The previous prime is 155212201. The next prime is 155212207. The reversal of 155212204 is 402212551.

It is an interprime number because it is at equal distance from previous prime (155212201) and next prime (155212207).

It is not an unprimeable number, because it can be changed into a prime (155212201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395754 + ... + 396145.

Almost surely, 2^155212204 is an apocalyptic number.

155212204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155212204 is an abundant number, since it is smaller than the sum of its proper divisors (160755896).

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

155212204 is a wasteful number, since it uses less digits than its factorization.

155212204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791917 (or 791908 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 155212204 is about 12458.4190008203. The cubic root of 155212204 is about 537.4135620151.

Adding to 155212204 its reverse (402212551), we get a palindrome (557424755).

The spelling of 155212204 in words is "one hundred fifty-five million, two hundred twelve thousand, two hundred four".