155281104 has 160 divisors (see below), whose sum is σ = 498718080. Its totient is φ = 45849600.

The previous prime is 155281099. The next prime is 155281117. The reversal of 155281104 is 401182551.

155281104 is a `hidden beast` number, since 1 + 552 + 8 + 1 + 104 = 666.

It is a super-2 number, since 2×155281104² = 48224442518917632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194434 + ... + 195230.

It is an arithmetic number, because the mean of its divisors is an integer number (3116988).

Almost surely, 2^155281104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155281104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249359040).

155281104 is an abundant number, since it is smaller than the sum of its proper divisors (343436976).

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

155281104 is a wasteful number, since it uses less digits than its factorization.

155281104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 155281104 is about 12461.1838923916. The cubic root of 155281104 is about 537.4930710482.

The spelling of 155281104 in words is "one hundred fifty-five million, two hundred eighty-one thousand, one hundred four".