155039423 has 16 divisors (see below), whose sum is σ = 199964160. Its totient is φ = 116642400.

The previous prime is 155039399. The next prime is 155039429. The reversal of 155039423 is 324930551.

It is not a de Polignac number, because 155039423 - 2¹² = 155035327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155039423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155039429) 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 15 ways as a sum of consecutive naturals, for example, 32483 + ... + 36948.

It is an arithmetic number, because the mean of its divisors is an integer number (12497760).

Almost surely, 2^155039423 is an apocalyptic number.

155039423 is a deficient number, since it is larger than the sum of its proper divisors (44924737).

155039423 is a wasteful number, since it uses less digits than its factorization.

155039423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69478.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 155039423 is about 12451.4827631090. The cubic root of 155039423 is about 537.2140731290.

Adding to 155039423 its reverse (324930551), we get a palindrome (479969974).

The spelling of 155039423 in words is "one hundred fifty-five million, thirty-nine thousand, four hundred twenty-three".