155982923 has 4 divisors (see below), whose sum is σ = 156249240. Its totient is φ = 155716608.

The previous prime is 155982907. The next prime is 155982929. The reversal of 155982923 is 329289551.

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 155982923 - 2⁴ = 155982907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155982929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132278 + ... + 133451.

It is an arithmetic number, because the mean of its divisors is an integer number (39062310).

Almost surely, 2^155982923 is an apocalyptic number.

155982923 is a deficient number, since it is larger than the sum of its proper divisors (266317).

155982923 is an equidigital number, since it uses as much as digits as its factorization.

155982923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266316.

The product of its digits is 194400, while the sum is 44.

The square root of 155982923 is about 12489.3123509663. The cubic root of 155982923 is about 538.3016175172.

The spelling of 155982923 in words is "one hundred fifty-five million, nine hundred eighty-two thousand, nine hundred twenty-three".