155381544 has 64 divisors (see below), whose sum is σ = 454344000. Its totient is φ = 49066560.

The previous prime is 155381533. The next prime is 155381573. The reversal of 155381544 is 445183551.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 155381499 and 155381508.

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 15 ways as a sum of consecutive naturals, for example, 14827 + ... + 23034.

It is an arithmetic number, because the mean of its divisors is an integer number (7099125).

Almost surely, 2^155381544 is an apocalyptic number.

It is an amenable number.

155381544 is an abundant number, since it is smaller than the sum of its proper divisors (298962456).

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

155381544 is a wasteful number, since it uses less digits than its factorization.

155381544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37895 (or 37885 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 155381544 is about 12465.2133555748. The cubic root of 155381544 is about 537.6089344019.

The spelling of 155381544 in words is "one hundred fifty-five million, three hundred eighty-one thousand, five hundred forty-four".