155378323 has 2 divisors, whose sum is σ = 155378324. Its totient is φ = 155378322.

The previous prime is 155378297. The next prime is 155378357. The reversal of 155378323 is 323873551.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155378323 is a prime.

It is not a weakly prime, because it can be changed into another prime (155378123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77689161 + 77689162.

It is an arithmetic number, because the mean of its divisors is an integer number (77689162).

Almost surely, 2^155378323 is an apocalyptic number.

155378323 is a deficient number, since it is larger than the sum of its proper divisors (1).

155378323 is an equidigital number, since it uses as much as digits as its factorization.

155378323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 155378323 is about 12465.0841553517. The cubic root of 155378323 is about 537.6052195670.

The spelling of 155378323 in words is "one hundred fifty-five million, three hundred seventy-eight thousand, three hundred twenty-three".