155944423 has 2 divisors, whose sum is σ = 155944424. Its totient is φ = 155944422.

The previous prime is 155944421. The next prime is 155944427. The reversal of 155944423 is 324449551.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (324449551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155944423 - 2¹ = 155944421 is a prime.

Together with 155944421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155944421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77972211 + 77972212.

It is an arithmetic number, because the mean of its divisors is an integer number (77972212).

Almost surely, 2^155944423 is an apocalyptic number.

155944423 is a deficient number, since it is larger than the sum of its proper divisors (1).

155944423 is an equidigital number, since it uses as much as digits as its factorization.

155944423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The square root of 155944423 is about 12487.7709380017. The cubic root of 155944423 is about 538.2573256652.

The spelling of 155944423 in words is "one hundred fifty-five million, nine hundred forty-four thousand, four hundred twenty-three".