155045123 has 2 divisors, whose sum is σ = 155045124. Its totient is φ = 155045122.

The previous prime is 155045119. The next prime is 155045141. The reversal of 155045123 is 321540551.

155045123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155045123 - 2² = 155045119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155045092 and 155045101.

It is not a weakly prime, because it can be changed into another prime (155045173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77522561 + 77522562.

It is an arithmetic number, because the mean of its divisors is an integer number (77522562).

Almost surely, 2^155045123 is an apocalyptic number.

155045123 is a deficient number, since it is larger than the sum of its proper divisors (1).

155045123 is an equidigital number, since it uses as much as digits as its factorization.

155045123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155045123 is about 12451.7116494079. The cubic root of 155045123 is about 537.2206565786.

Adding to 155045123 its reverse (321540551), we get a palindrome (476585674).

The spelling of 155045123 in words is "one hundred fifty-five million, forty-five thousand, one hundred twenty-three".