155224141 has 2 divisors, whose sum is σ = 155224142. Its totient is φ = 155224140.

The previous prime is 155224133. The next prime is 155224159. The reversal of 155224141 is 141422551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97022500 + 58201641 = 9850^2 + 7629^2 .

It is a cyclic number.

It is not a de Polignac number, because 155224141 - 2³ = 155224133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155224241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77612070 + 77612071.

It is an arithmetic number, because the mean of its divisors is an integer number (77612071).

Almost surely, 2^155224141 is an apocalyptic number.

It is an amenable number.

155224141 is a deficient number, since it is larger than the sum of its proper divisors (1).

155224141 is an equidigital number, since it uses as much as digits as its factorization.

155224141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 155224141 is about 12458.8980652384. The cubic root of 155224141 is about 537.4273387266.

Adding to 155224141 its reverse (141422551), we get a palindrome (296646692).

The spelling of 155224141 in words is "one hundred fifty-five million, two hundred twenty-four thousand, one hundred forty-one".