155468669 has 2 divisors, whose sum is σ = 155468670. Its totient is φ = 155468668.

The previous prime is 155468639. The next prime is 155468713. The reversal of 155468669 is 966864551.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135443044 + 20025625 = 11638^2 + 4475^2 .

It is a cyclic number.

It is not a de Polignac number, because 155468669 - 2¹⁶ = 155403133 is a prime.

It is a super-2 number, since 2×155468669² = 48341014081263122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155468639) 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, 77734334 + 77734335.

It is an arithmetic number, because the mean of its divisors is an integer number (77734335).

Almost surely, 2^155468669 is an apocalyptic number.

It is an amenable number.

155468669 is a deficient number, since it is larger than the sum of its proper divisors (1).

155468669 is an equidigital number, since it uses as much as digits as its factorization.

155468669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 50.

The square root of 155468669 is about 12468.7075914066. The cubic root of 155468669 is about 537.7093976990.

The spelling of 155468669 in words is "one hundred fifty-five million, four hundred sixty-eight thousand, six hundred sixty-nine".