155982885 has 32 divisors (see below), whose sum is σ = 254102400. Its totient is φ = 81696000.

The previous prime is 155982877. The next prime is 155982889. The reversal of 155982885 is 588289551.

It is not a de Polignac number, because 155982885 - 2³ = 155982877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155982889) 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 31 ways as a sum of consecutive naturals, for example, 225390 + ... + 226080.

It is an arithmetic number, because the mean of its divisors is an integer number (7940700).

Almost surely, 2^155982885 is an apocalyptic number.

155982885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155982885 is a deficient number, since it is larger than the sum of its proper divisors (98119515).

155982885 is a wasteful number, since it uses less digits than its factorization.

155982885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its digits is 1152000, while the sum is 51.

The square root of 155982885 is about 12489.3108296655. The cubic root of 155982885 is about 538.3015738041.

The spelling of 155982885 in words is "one hundred fifty-five million, nine hundred eighty-two thousand, eight hundred eighty-five".