155002241 has 2 divisors, whose sum is σ = 155002242. Its totient is φ = 155002240.

The previous prime is 155002231. The next prime is 155002297. The reversal of 155002241 is 142200551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109830400 + 45171841 = 10480^2 + 6721^2 .

It is a cyclic number.

It is not a de Polignac number, because 155002241 - 2¹⁸ = 154740097 is a prime.

It is not a weakly prime, because it can be changed into another prime (155002231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77501120 + 77501121.

It is an arithmetic number, because the mean of its divisors is an integer number (77501121).

Almost surely, 2^155002241 is an apocalyptic number.

It is an amenable number.

155002241 is a deficient number, since it is larger than the sum of its proper divisors (1).

155002241 is an equidigital number, since it uses as much as digits as its factorization.

155002241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 155002241 is about 12449.9895983892. The cubic root of 155002241 is about 537.1711242878.

Adding to 155002241 its reverse (142200551), we get a palindrome (297202792).

The spelling of 155002241 in words is "one hundred fifty-five million, two thousand, two hundred forty-one".