155801030 has 32 divisors (see below), whose sum is σ = 349643520. Its totient is φ = 48561120.

The previous prime is 155801029. The next prime is 155801047. The reversal of 155801030 is 30108551.

It is a junction number, because it is equal to n+sod(n) for n = 155800987 and 155801005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100400 + ... + 101939.

It is an arithmetic number, because the mean of its divisors is an integer number (10926360).

Almost surely, 2^155801030 is an apocalyptic number.

155801030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155801030 is an abundant number, since it is smaller than the sum of its proper divisors (193842490).

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

155801030 is a wasteful number, since it uses less digits than its factorization.

155801030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202364.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 155801030 is about 12482.0282806922. The cubic root of 155801030 is about 538.0922967828.

Adding to 155801030 its reverse (30108551), we get a palindrome (185909581).

The spelling of 155801030 in words is "one hundred fifty-five million, eight hundred one thousand, thirty".