155930023 has 8 divisors (see below), whose sum is σ = 156839760. Its totient is φ = 155023680.

The previous prime is 155930009. The next prime is 155930029. The reversal of 155930023 is 320039551.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155930023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155929973 and 155930000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155930029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188136 + ... + 188962.

It is an arithmetic number, because the mean of its divisors is an integer number (19604970).

Almost surely, 2^155930023 is an apocalyptic number.

155930023 is a deficient number, since it is larger than the sum of its proper divisors (909737).

155930023 is an equidigital number, since it uses as much as digits as its factorization.

155930023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 155930023 is about 12487.1943606240. The cubic root of 155930023 is about 538.2407574889.

Adding to 155930023 its reverse (320039551), we get a palindrome (475969574).

The spelling of 155930023 in words is "one hundred fifty-five million, nine hundred thirty thousand, twenty-three".