155204112 has 40 divisors (see below), whose sum is σ = 458222656. Its totient is φ = 44343936.

The previous prime is 155204057. The next prime is 155204129. The reversal of 155204112 is 211402551.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230623 + ... + 231294.

Almost surely, 2^155204112 is an apocalyptic number.

155204112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155204112 is an abundant number, since it is smaller than the sum of its proper divisors (303018544).

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

155204112 is a wasteful number, since it uses less digits than its factorization.

155204112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461935 (or 461929 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 155204112 is about 12458.0942362787. The cubic root of 155204112 is about 537.4042224873.

Adding to 155204112 its reverse (211402551), we get a palindrome (366606663).

The spelling of 155204112 in words is "one hundred fifty-five million, two hundred four thousand, one hundred twelve".