155336281 has 2 divisors, whose sum is σ = 155336282. Its totient is φ = 155336280.

The previous prime is 155336231. The next prime is 155336299. The reversal of 155336281 is 182633551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155251600 + 84681 = 12460^2 + 291^2 .

It is an emirp because it is prime and its reverse (182633551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155336281 - 2²³ = 146947673 is a prime.

It is a super-2 number, since 2×155336281² = 48258720389821922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155336201) 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, 77668140 + 77668141.

It is an arithmetic number, because the mean of its divisors is an integer number (77668141).

Almost surely, 2^155336281 is an apocalyptic number.

It is an amenable number.

155336281 is a deficient number, since it is larger than the sum of its proper divisors (1).

155336281 is an equidigital number, since it uses as much as digits as its factorization.

155336281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 34.

The square root of 155336281 is about 12463.3976507211. The cubic root of 155336281 is about 537.5567270938.

The spelling of 155336281 in words is "one hundred fifty-five million, three hundred thirty-six thousand, two hundred eighty-one".