155612323 has 4 divisors (see below), whose sum is σ = 158249880. Its totient is φ = 152974768.

The previous prime is 155612291. The next prime is 155612357. The reversal of 155612323 is 323216551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155612323 - 2⁵ = 155612291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155612291 and 155612300.

It is not an unprimeable number, because it can be changed into a prime (155612363) 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 3 ways as a sum of consecutive naturals, for example, 1318690 + ... + 1318807.

It is an arithmetic number, because the mean of its divisors is an integer number (39562470).

Almost surely, 2^155612323 is an apocalyptic number.

155612323 is a deficient number, since it is larger than the sum of its proper divisors (2637557).

155612323 is an equidigital number, since it uses as much as digits as its factorization.

155612323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637556.

The product of its digits is 5400, while the sum is 28.

The square root of 155612323 is about 12474.4668423143. The cubic root of 155612323 is about 537.8749623047.

Adding to 155612323 its reverse (323216551), we get a palindrome (478828874).

The spelling of 155612323 in words is "one hundred fifty-five million, six hundred twelve thousand, three hundred twenty-three".