155481066 has 64 divisors (see below), whose sum is σ = 391708800. Its totient is φ = 45318528.

The previous prime is 155481059. The next prime is 155481083. The reversal of 155481066 is 660184551.

155481066 is a `hidden beast` number, since 1 + 5 + 548 + 106 + 6 = 666.

155481066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 155481066.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7510 + ... + 19166.

It is an arithmetic number, because the mean of its divisors is an integer number (6120450).

Almost surely, 2^155481066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155481066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195854400).

155481066 is an abundant number, since it is smaller than the sum of its proper divisors (236227734).

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

155481066 is a wasteful number, since it uses less digits than its factorization.

155481066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11700 (or 11694 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 155481066 is about 12469.2047059947. The cubic root of 155481066 is about 537.7236895523.

The spelling of 155481066 in words is "one hundred fifty-five million, four hundred eighty-one thousand, sixty-six".