155303030 has 16 divisors (see below), whose sum is σ = 279839664. Its totient is φ = 62055840.

The previous prime is 155303021. The next prime is 155303081. The reversal of 155303030 is 30303551.

155303030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155303030² = 48238062254361800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155302993 and 155303011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2465 + ... + 17795.

It is an arithmetic number, because the mean of its divisors is an integer number (17489979).

Almost surely, 2^155303030 is an apocalyptic number.

155303030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155303030 is a deficient number, since it is larger than the sum of its proper divisors (124536634).

155303030 is a wasteful number, since it uses less digits than its factorization.

155303030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16351.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 155303030 is about 12462.0636332832. The cubic root of 155303030 is about 537.5183682203.

Adding to 155303030 its reverse (30303551), we get a palindrome (185606581).

The spelling of 155303030 in words is "one hundred fifty-five million, three hundred three thousand, thirty".