155440324 has 48 divisors (see below), whose sum is σ = 304493056. Its totient is φ = 68947200.

The previous prime is 155440303. The next prime is 155440331. The reversal of 155440324 is 423044551.

It is a junction number, because it is equal to n+sod(n) for n = 155440292 and 155440301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339904 + ... + 340360.

Almost surely, 2^155440324 is an apocalyptic number.

It is an amenable number.

155440324 is a deficient number, since it is larger than the sum of its proper divisors (149052732).

155440324 is a wasteful number, since it uses less digits than its factorization.

155440324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 155440324 is about 12467.5708941237. The cubic root of 155440324 is about 537.6767173754.

Adding to 155440324 its reverse (423044551), we get a palindrome (578484875).

The spelling of 155440324 in words is "one hundred fifty-five million, four hundred forty thousand, three hundred twenty-four".