155968441 has 2 divisors, whose sum is σ = 155968442. Its totient is φ = 155968440.

The previous prime is 155968403. The next prime is 155968487. The reversal of 155968441 is 144869551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154480041 + 1488400 = 12429^2 + 1220^2 .

It is a cyclic number.

It is not a de Polignac number, because 155968441 - 2¹⁷ = 155837369 is a prime.

It is not a weakly prime, because it can be changed into another prime (155968541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77984220 + 77984221.

It is an arithmetic number, because the mean of its divisors is an integer number (77984221).

Almost surely, 2^155968441 is an apocalyptic number.

It is an amenable number.

155968441 is a deficient number, since it is larger than the sum of its proper divisors (1).

155968441 is an equidigital number, since it uses as much as digits as its factorization.

155968441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 43.

The square root of 155968441 is about 12488.7325617935. The cubic root of 155968441 is about 538.2849577334.

The spelling of 155968441 in words is "one hundred fifty-five million, nine hundred sixty-eight thousand, four hundred forty-one".