155244029 has 2 divisors, whose sum is σ = 155244030. Its totient is φ = 155244028.

The previous prime is 155244007. The next prime is 155244059. The reversal of 155244029 is 920442551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131721529 + 23522500 = 11477^2 + 4850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155244029 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155243986 and 155244004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155244059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77622014 + 77622015.

It is an arithmetic number, because the mean of its divisors is an integer number (77622015).

Almost surely, 2^155244029 is an apocalyptic number.

It is an amenable number.

155244029 is a deficient number, since it is larger than the sum of its proper divisors (1).

155244029 is an equidigital number, since it uses as much as digits as its factorization.

155244029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 155244029 is about 12459.6961840969. The cubic root of 155244029 is about 537.4502902649.

The spelling of 155244029 in words is "one hundred fifty-five million, two hundred forty-four thousand, twenty-nine".