155005288 has 8 divisors (see below), whose sum is σ = 290634930. Its totient is φ = 77502640.

The previous prime is 155005267. The next prime is 155005289. The reversal of 155005288 is 882500551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 114019684 + 40985604 = 10678^2 + 6402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (155005289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9687823 + ... + 9687838.

Almost surely, 2^155005288 is an apocalyptic number.

It is an amenable number.

155005288 is a deficient number, since it is larger than the sum of its proper divisors (135629642).

155005288 is a wasteful number, since it uses less digits than its factorization.

155005288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19375667 (or 19375663 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 155005288 is about 12450.1119673680. Note that the first 3 decimals coincide. The cubic root of 155005288 is about 537.1746441287.

The spelling of 155005288 in words is "one hundred fifty-five million, five thousand, two hundred eighty-eight".