155530424 has 16 divisors (see below), whose sum is σ = 333279600. Its totient is φ = 66655872.

The previous prime is 155530411. The next prime is 155530429. The reversal of 155530424 is 424035551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155530429) 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, 1388609 + ... + 1388720.

It is an arithmetic number, because the mean of its divisors is an integer number (20829975).

Almost surely, 2^155530424 is an apocalyptic number.

155530424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155530424 is an abundant number, since it is smaller than the sum of its proper divisors (177749176).

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

155530424 is a wasteful number, since it uses less digits than its factorization.

155530424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777342 (or 2777338 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 155530424 is about 12471.1837449378. The cubic root of 155530424 is about 537.7805842781.

Adding to 155530424 its reverse (424035551), we get a palindrome (579565975).

The spelling of 155530424 in words is "one hundred fifty-five million, five hundred thirty thousand, four hundred twenty-four".