155530385 has 8 divisors (see below), whose sum is σ = 188381376. Its totient is φ = 123261040.

The previous prime is 155530373. The next prime is 155530387. The reversal of 155530385 is 583035551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155530385 - 2⁶ = 155530321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155530387) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 144821 + ... + 145890.

It is an arithmetic number, because the mean of its divisors is an integer number (23547672).

Almost surely, 2^155530385 is an apocalyptic number.

It is an amenable number.

155530385 is a deficient number, since it is larger than the sum of its proper divisors (32850991).

155530385 is a wasteful number, since it uses less digits than its factorization.

155530385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290823.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 155530385 is about 12471.1821813331. The cubic root of 155530385 is about 537.7805393277.

The spelling of 155530385 in words is "one hundred fifty-five million, five hundred thirty thousand, three hundred eighty-five".