155842823 has 2 divisors, whose sum is σ = 155842824. Its totient is φ = 155842822.

The previous prime is 155842789. The next prime is 155842831. The reversal of 155842823 is 328248551.

155842823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155842823 - 2²⁴ = 139065607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155842873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77921411 + 77921412.

It is an arithmetic number, because the mean of its divisors is an integer number (77921412).

Almost surely, 2^155842823 is an apocalyptic number.

155842823 is a deficient number, since it is larger than the sum of its proper divisors (1).

155842823 is an equidigital number, since it uses as much as digits as its factorization.

155842823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76800, while the sum is 38.

The square root of 155842823 is about 12483.7022953930. The cubic root of 155842823 is about 538.1404061799.

The spelling of 155842823 in words is "one hundred fifty-five million, eight hundred forty-two thousand, eight hundred twenty-three".