155030849 has 2 divisors, whose sum is σ = 155030850. Its totient is φ = 155030848.

The previous prime is 155030797. The next prime is 155030857. The reversal of 155030849 is 948030551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145636624 + 9394225 = 12068^2 + 3065^2 .

It is a cyclic number.

It is not a de Polignac number, because 155030849 - 2¹⁶ = 154965313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155020849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77515424 + 77515425.

It is an arithmetic number, because the mean of its divisors is an integer number (77515425).

Almost surely, 2^155030849 is an apocalyptic number.

It is an amenable number.

155030849 is a deficient number, since it is larger than the sum of its proper divisors (1).

155030849 is an equidigital number, since it uses as much as digits as its factorization.

155030849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 155030849 is about 12451.1384620042. The cubic root of 155030849 is about 537.2041699309.

The spelling of 155030849 in words is "one hundred fifty-five million, thirty thousand, eight hundred forty-nine".