155505405224 has 16 divisors (see below), whose sum is σ = 314001299220. Its totient is φ = 71771725440.

The previous prime is 155505405089. The next prime is 155505405227. The reversal of 155505405224 is 422504505551.

It can be written as a sum of positive squares in 2 ways, for example, as 146666020900 + 8839384324 = 382970^2 + 94018^2 .

It is not an unprimeable number, because it can be changed into a prime (155505405227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747622037 + ... + 747622244.

Almost surely, 2^155505405224 is an apocalyptic number.

It is an amenable number.

155505405224 is an abundant number, since it is smaller than the sum of its proper divisors (158495893996).

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

155505405224 is a wasteful number, since it uses less digits than its factorization.

155505405224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495244300 (or 1495244296 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 38.

The spelling of 155505405224 in words is "one hundred fifty-five billion, five hundred five million, four hundred five thousand, two hundred twenty-four".