155465923 has 4 divisors (see below), whose sum is σ = 163648360. Its totient is φ = 147283488.

The previous prime is 155465911. The next prime is 155465927. The reversal of 155465923 is 329564551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329564551 = 1231 ⋅267721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155465923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155465927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4091190 + ... + 4091227.

It is an arithmetic number, because the mean of its divisors is an integer number (40912090).

Almost surely, 2^155465923 is an apocalyptic number.

155465923 is a deficient number, since it is larger than the sum of its proper divisors (8182437).

155465923 is an equidigital number, since it uses as much as digits as its factorization.

155465923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8182436.

The product of its digits is 162000, while the sum is 40.

The square root of 155465923 is about 12468.5974752576. The cubic root of 155465923 is about 537.7062318763.

The spelling of 155465923 in words is "one hundred fifty-five million, four hundred sixty-five thousand, nine hundred twenty-three".