155644424 has 16 divisors (see below), whose sum is σ = 314282220. Its totient is φ = 71835840.

The previous prime is 155644399. The next prime is 155644429. The reversal of 155644424 is 424446551.

155644424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 112741924 + 42902500 = 10618^2 + 6550^2 .

It is not an unprimeable number, because it can be changed into a prime (155644429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748187 + ... + 748394.

Almost surely, 2^155644424 is an apocalyptic number.

It is an amenable number.

155644424 is an abundant number, since it is smaller than the sum of its proper divisors (158637796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155644424 is a wasteful number, since it uses less digits than its factorization.

155644424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496600 (or 1496596 counting only the distinct ones).

The product of its digits is 76800, while the sum is 35.

The square root of 155644424 is about 12475.7534441812. The cubic root of 155644424 is about 537.9119455305.

The spelling of 155644424 in words is "one hundred fifty-five million, six hundred forty-four thousand, four hundred twenty-four".