155023005 has 16 divisors (see below), whose sum is σ = 250234560. Its totient is φ = 81946368.

The previous prime is 155023003. The next prime is 155023073. The reversal of 155023005 is 500320551.

It is not a de Polignac number, because 155023005 - 2¹ = 155023003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155023003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44035 + ... + 47424.

It is an arithmetic number, because the mean of its divisors is an integer number (15639660).

Almost surely, 2^155023005 is an apocalyptic number.

155023005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155023005 is a deficient number, since it is larger than the sum of its proper divisors (95211555).

155023005 is a wasteful number, since it uses less digits than its factorization.

155023005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91580.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 155023005 is about 12450.8234667431. The cubic root of 155023005 is about 537.1951095823.

Adding to 155023005 its reverse (500320551), we get a palindrome (655343556).

The spelling of 155023005 in words is "one hundred fifty-five million, twenty-three thousand, five".