155155234 has 16 divisors (see below), whose sum is σ = 256750200. Its totient is φ = 69863040.

The previous prime is 155155229. The next prime is 155155237. The reversal of 155155234 is 432551551.

It can be written as a sum of positive squares in 4 ways, for example, as 87142225 + 68013009 = 9335^2 + 8247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155155196 and 155155205.

It is not an unprimeable number, because it can be changed into a prime (155155237) 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, 71709 + ... + 73840.

Almost surely, 2^155155234 is an apocalyptic number.

155155234 is a deficient number, since it is larger than the sum of its proper divisors (101594966).

155155234 is a wasteful number, since it uses less digits than its factorization.

155155234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145605.

The product of its digits is 15000, while the sum is 31.

The square root of 155155234 is about 12456.1323852952. The cubic root of 155155234 is about 537.3478021576.

The spelling of 155155234 in words is "one hundred fifty-five million, one hundred fifty-five thousand, two hundred thirty-four".