155022641 has 2 divisors, whose sum is σ = 155022642. Its totient is φ = 155022640.

The previous prime is 155022629. The next prime is 155022683. The reversal of 155022641 is 146220551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145902241 + 9120400 = 12079^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 155022641 - 2¹⁸ = 154760497 is a prime.

It is a super-2 number, since 2×155022641² = 48064038445229762, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155022641.

It is not a weakly prime, because it can be changed into another prime (155022841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77511320 + 77511321.

It is an arithmetic number, because the mean of its divisors is an integer number (77511321).

Almost surely, 2^155022641 is an apocalyptic number.

It is an amenable number.

155022641 is a deficient number, since it is larger than the sum of its proper divisors (1).

155022641 is an equidigital number, since it uses as much as digits as its factorization.

155022641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 155022641 is about 12450.8088492274. The cubic root of 155022641 is about 537.1946891304.

The spelling of 155022641 in words is "one hundred fifty-five million, twenty-two thousand, six hundred forty-one".