155393900 has 36 divisors (see below), whose sum is σ = 337921080. Its totient is φ = 62025600.

The previous prime is 155393899. The next prime is 155393921. The reversal of 155393900 is 9393551.

155393900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55535 + ... + 58265.

Almost surely, 2^155393900 is an apocalyptic number.

155393900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155393900 is an abundant number, since it is smaller than the sum of its proper divisors (182527180).

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

155393900 is a wasteful number, since it uses less digits than its factorization.

155393900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 3307 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 155393900 is about 12465.7089649967. The cubic root of 155393900 is about 537.6231843138.

The spelling of 155393900 in words is "one hundred fifty-five million, three hundred ninety-three thousand, nine hundred".