155143039 has 4 divisors (see below), whose sum is σ = 155496880. Its totient is φ = 154789200.

The previous prime is 155143033. The next prime is 155143049. The reversal of 155143039 is 930341551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930341551 = 463 ⋅2009377.

It is a cyclic number.

It is not a de Polignac number, because 155143039 - 2¹¹ = 155140991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155143039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155143033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176262 + ... + 177139.

It is an arithmetic number, because the mean of its divisors is an integer number (38874220).

Almost surely, 2^155143039 is an apocalyptic number.

155143039 is a deficient number, since it is larger than the sum of its proper divisors (353841).

155143039 is an equidigital number, since it uses as much as digits as its factorization.

155143039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353840.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 155143039 is about 12455.6428577573. The cubic root of 155143039 is about 537.3337235088. Note that the first 3 decimals are identical.

The spelling of 155143039 in words is "one hundred fifty-five million, one hundred forty-three thousand, thirty-nine".