155434550 has 12 divisors (see below), whose sum is σ = 289108356. Its totient is φ = 62173800.

The previous prime is 155434541. The next prime is 155434561. The reversal of 155434550 is 55434551.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1554296 + ... + 1554395.

It is an arithmetic number, because the mean of its divisors is an integer number (24092363).

Almost surely, 2^155434550 is an apocalyptic number.

155434550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155434550 is a deficient number, since it is larger than the sum of its proper divisors (133673806).

155434550 is a wasteful number, since it uses less digits than its factorization.

155434550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108703 (or 3108698 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 155434550 is about 12467.3393312286. The cubic root of 155434550 is about 537.6700597640.

Subtracting from 155434550 its reverse (55434551), we obtain a palindrome (99999999).

The spelling of 155434550 in words is "one hundred fifty-five million, four hundred thirty-four thousand, five hundred fifty".