155672329 has 2 divisors, whose sum is σ = 155672330. Its totient is φ = 155672328.

The previous prime is 155672323. The next prime is 155672333. The reversal of 155672329 is 923276551.

155672329 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 can be written as a sum of positive squares in only one way, i.e., 107744400 + 47927929 = 10380^2 + 6923^2 .

It is a cyclic number.

It is not a de Polignac number, because 155672329 - 2⁷ = 155672201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155672291 and 155672300.

It is not a weakly prime, because it can be changed into another prime (155672323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77836164 + 77836165.

It is an arithmetic number, because the mean of its divisors is an integer number (77836165).

Almost surely, 2^155672329 is an apocalyptic number.

It is an amenable number.

155672329 is a deficient number, since it is larger than the sum of its proper divisors (1).

155672329 is an equidigital number, since it uses as much as digits as its factorization.

155672329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 155672329 is about 12476.8717633868. The cubic root of 155672329 is about 537.9440904573.

The spelling of 155672329 in words is "one hundred fifty-five million, six hundred seventy-two thousand, three hundred twenty-nine".