155145474 has 36 divisors (see below), whose sum is σ = 369490758. Its totient is φ = 47013120.

The previous prime is 155145461. The next prime is 155145521. The reversal of 155145474 is 474541551.

155145474 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 117874449 + 37271025 = 10857^2 + 6105^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33439 + ... + 37794.

Almost surely, 2^155145474 is an apocalyptic number.

155145474 is an abundant number, since it is smaller than the sum of its proper divisors (214345284).

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

155145474 is a wasteful number, since it uses less digits than its factorization.

155145474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71263 (or 71249 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 155145474 is about 12455.7406042355. The cubic root of 155145474 is about 537.3365346797.

The spelling of 155145474 in words is "one hundred fifty-five million, one hundred forty-five thousand, four hundred seventy-four".