155500232 has 8 divisors (see below), whose sum is σ = 291562950. Its totient is φ = 77750112.

The previous prime is 155500231. The next prime is 155500243. The reversal of 155500232 is 232005551.

It can be written as a sum of positive squares in only one way, i.e., 152423716 + 3076516 = 12346^2 + 1754^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 155500198 and 155500207.

It is not an unprimeable number, because it can be changed into a prime (155500231) 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, 9718757 + ... + 9718772.

Almost surely, 2^155500232 is an apocalyptic number.

It is an amenable number.

155500232 is a deficient number, since it is larger than the sum of its proper divisors (136062718).

155500232 is a wasteful number, since it uses less digits than its factorization.

155500232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19437535 (or 19437531 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 155500232 is about 12469.9732156890. The cubic root of 155500232 is about 537.7457835368.

Adding to 155500232 its reverse (232005551), we get a palindrome (387505783).

The spelling of 155500232 in words is "one hundred fifty-five million, five hundred thousand, two hundred thirty-two".