155055969 has 12 divisors (see below), whose sum is σ = 224155776. Its totient is φ = 103284792.

The previous prime is 155055931. The next prime is 155055991. The reversal of 155055969 is 969550551.

155055969 is a `hidden beast` number, since 1 + 5 + 50 + 5 + 596 + 9 = 666.

It is not a de Polignac number, because 155055969 - 2⁷ = 155055841 is a prime.

It is a super-2 number, since 2×155055969² = 48084707045057922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155055919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5452 + ... + 18434.

It is an arithmetic number, because the mean of its divisors is an integer number (18679648).

Almost surely, 2^155055969 is an apocalyptic number.

It is an amenable number.

155055969 is a deficient number, since it is larger than the sum of its proper divisors (69099807).

155055969 is a wasteful number, since it uses less digits than its factorization.

155055969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14316 (or 14313 counting only the distinct ones).

The product of its (nonzero) digits is 303750, while the sum is 45.

The square root of 155055969 is about 12452.1471642444. The cubic root of 155055969 is about 537.2331831671.

The spelling of 155055969 in words is "one hundred fifty-five million, fifty-five thousand, nine hundred sixty-nine".