155000030 has 32 divisors (see below), whose sum is σ = 287854560. Its totient is φ = 60048000.

The previous prime is 155000023. The next prime is 155000039. The reversal of 155000030 is 30000551.

It is a junction number, because it is equal to n+sod(n) for n = 154999969 and 155000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155000039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92036 + ... + 93704.

It is an arithmetic number, because the mean of its divisors is an integer number (8995455).

Almost surely, 2^155000030 is an apocalyptic number.

155000030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155000030 is a deficient number, since it is larger than the sum of its proper divisors (132854530).

155000030 is a wasteful number, since it uses less digits than its factorization.

155000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964.

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 155000030 is about 12449.9008028177. The cubic root of 155000030 is about 537.1685701505.

Adding to 155000030 its reverse (30000551), we get a palindrome (185000581).

The spelling of 155000030 in words is "one hundred fifty-five million, thirty", and thus it is an aban number.