155147580 has 144 divisors (see below), whose sum is σ = 547223040. Its totient is φ = 34844544.

The previous prime is 155147563. The next prime is 155147609. The reversal of 155147580 is 85741551.

155147580 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73297 + ... + 75383.

It is an arithmetic number, because the mean of its divisors is an integer number (3800160).

Almost surely, 2^155147580 is an apocalyptic number.

155147580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155147580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273611520).

155147580 is an abundant number, since it is smaller than the sum of its proper divisors (392075460).

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

155147580 is a wasteful number, since it uses less digits than its factorization.

155147580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 36.

The square root of 155147580 is about 12455.8251432814. The cubic root of 155147580 is about 537.3389660013.

The spelling of 155147580 in words is "one hundred fifty-five million, one hundred forty-seven thousand, five hundred eighty".