155233139 has 8 divisors (see below), whose sum is σ = 160332480. Its totient is φ = 150201576.

The previous prime is 155233123. The next prime is 155233153. The reversal of 155233139 is 931332551.

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

It is a cyclic number.

It is not a de Polignac number, because 155233139 - 2⁴ = 155233123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155233109) 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 in 7 ways as a sum of consecutive naturals, for example, 12269 + ... + 21470.

It is an arithmetic number, because the mean of its divisors is an integer number (20041560).

Almost surely, 2^155233139 is an apocalyptic number.

155233139 is a deficient number, since it is larger than the sum of its proper divisors (5099341).

155233139 is a wasteful number, since it uses less digits than its factorization.

155233139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33889.

The product of its digits is 12150, while the sum is 32.

The square root of 155233139 is about 12459.2591673823. The cubic root of 155233139 is about 537.4377230172.

The spelling of 155233139 in words is "one hundred fifty-five million, two hundred thirty-three thousand, one hundred thirty-nine".