155123433 has 6 divisors (see below), whose sum is σ = 224067194. Its totient is φ = 103415616.

The previous prime is 155123417. The next prime is 155123443. The reversal of 155123433 is 334321551.

It can be written as a sum of positive squares in only one way, i.e., 133333209 + 21790224 = 11547^2 + 4668^2 .

It is not a de Polignac number, because 155123433 - 2⁴ = 155123417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155123397 and 155123406.

It is not an unprimeable number, because it can be changed into a prime (155123443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8617960 + ... + 8617977.

Almost surely, 2^155123433 is an apocalyptic number.

It is an amenable number.

155123433 is a deficient number, since it is larger than the sum of its proper divisors (68943761).

155123433 is a wasteful number, since it uses less digits than its factorization.

155123433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17235943 (or 17235940 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 155123433 is about 12454.8558000484. The cubic root of 155123433 is about 537.3110876048.

Adding to 155123433 its reverse (334321551), we get a palindrome (489444984).

The spelling of 155123433 in words is "one hundred fifty-five million, one hundred twenty-three thousand, four hundred thirty-three".