155500430 has 32 divisors (see below), whose sum is σ = 284046048. Its totient is φ = 61286400.

The previous prime is 155500421. The next prime is 155500441. The reversal of 155500430 is 34005551.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155500396 and 155500405.

It is a congruent number.

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, 272045 + ... + 272615.

It is an arithmetic number, because the mean of its divisors is an integer number (8876439).

Almost surely, 2^155500430 is an apocalyptic number.

155500430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155500430 is a deficient number, since it is larger than the sum of its proper divisors (128545618).

155500430 is a wasteful number, since it uses less digits than its factorization.

155500430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932.

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

The square root of 155500430 is about 12469.9811547572. The cubic root of 155500430 is about 537.7460117757.

Adding to 155500430 its reverse (34005551), we get a palindrome (189505981).

The spelling of 155500430 in words is "one hundred fifty-five million, five hundred thousand, four hundred thirty".