155385478 has 12 divisors (see below), whose sum is σ = 238149612. Its totient is φ = 76037540.

The previous prime is 155385467. The next prime is 155385481. The reversal of 155385478 is 874583551.

155385478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13168 + ... + 22003.

It is an arithmetic number, because the mean of its divisors is an integer number (19845801).

Almost surely, 2^155385478 is an apocalyptic number.

155385478 is a deficient number, since it is larger than the sum of its proper divisors (82764134).

155385478 is an equidigital number, since it uses as much as digits as its factorization.

155385478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35267 (or 35220 counting only the distinct ones).

The product of its digits is 672000, while the sum is 46.

The square root of 155385478 is about 12465.3711537202. The cubic root of 155385478 is about 537.6134714824.

The spelling of 155385478 in words is "one hundred fifty-five million, three hundred eighty-five thousand, four hundred seventy-eight".