155123230 has 16 divisors (see below), whose sum is σ = 279519840. Its totient is φ = 61983072.

The previous prime is 155123219. The next prime is 155123237. The reversal of 155123230 is 32321551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155123237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2191 + ... + 17749.

It is an arithmetic number, because the mean of its divisors is an integer number (17469990).

Almost surely, 2^155123230 is an apocalyptic number.

155123230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155123230 is a deficient number, since it is larger than the sum of its proper divisors (124396610).

155123230 is a wasteful number, since it uses less digits than its factorization.

155123230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16563.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 155123230 is about 12454.8476506138. The cubic root of 155123230 is about 537.3108532233.

Adding to 155123230 its reverse (32321551), we get a palindrome (187444781).

The spelling of 155123230 in words is "one hundred fifty-five million, one hundred twenty-three thousand, two hundred thirty".