155430349 has 2 divisors, whose sum is σ = 155430350. Its totient is φ = 155430348.

The previous prime is 155430329. The next prime is 155430361. The reversal of 155430349 is 943034551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145974724 + 9455625 = 12082^2 + 3075^2 .

It is a cyclic number.

It is not a de Polignac number, because 155430349 - 2¹⁹ = 154906061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155430329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77715174 + 77715175.

It is an arithmetic number, because the mean of its divisors is an integer number (77715175).

Almost surely, 2^155430349 is an apocalyptic number.

It is an amenable number.

155430349 is a deficient number, since it is larger than the sum of its proper divisors (1).

155430349 is an equidigital number, since it uses as much as digits as its factorization.

155430349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 155430349 is about 12467.1708498761. The cubic root of 155430349 is about 537.6652157696.

The spelling of 155430349 in words is "one hundred fifty-five million, four hundred thirty thousand, three hundred forty-nine".