155432234 has 4 divisors (see below), whose sum is σ = 233148354. Its totient is φ = 77716116.

The previous prime is 155432231. The next prime is 155432239. The reversal of 155432234 is 432234551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143161225 + 12271009 = 11965^2 + 3503^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155432197 and 155432206.

It is not an unprimeable number, because it can be changed into a prime (155432231) by changing a digit.

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 as a sum of consecutive naturals, namely, 38858057 + ... + 38858060.

Almost surely, 2^155432234 is an apocalyptic number.

155432234 is a deficient number, since it is larger than the sum of its proper divisors (77716120).

155432234 is an equidigital number, since it uses as much as digits as its factorization.

155432234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77716119.

The product of its digits is 14400, while the sum is 29.

The square root of 155432234 is about 12467.2464481938. The cubic root of 155432234 is about 537.6673892937.

Adding to 155432234 its reverse (432234551), we get a palindrome (587666785).

The spelling of 155432234 in words is "one hundred fifty-five million, four hundred thirty-two thousand, two hundred thirty-four".