155230024 has 8 divisors (see below), whose sum is σ = 291056310. Its totient is φ = 77615008.

The previous prime is 155230001. The next prime is 155230027. The reversal of 155230024 is 420032551.

It can be written as a sum of positive squares in only one way, i.e., 151733124 + 3496900 = 12318^2 + 1870^2 .

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 = 155229977 and 155230004.

It is not an unprimeable number, because it can be changed into a prime (155230027) 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 as a sum of consecutive naturals, namely, 9701869 + ... + 9701884.

Almost surely, 2^155230024 is an apocalyptic number.

It is an amenable number.

155230024 is a deficient number, since it is larger than the sum of its proper divisors (135826286).

155230024 is a wasteful number, since it uses less digits than its factorization.

155230024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19403759 (or 19403755 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 155230024 is about 12459.1341593226. The cubic root of 155230024 is about 537.4341281454.

Adding to 155230024 its reverse (420032551), we get a palindrome (575262575).

The spelling of 155230024 in words is "one hundred fifty-five million, two hundred thirty thousand, twenty-four".