155012432 has 20 divisors (see below), whose sum is σ = 300811476. Its totient is φ = 77383680.

The previous prime is 155012423. The next prime is 155012437. The reversal of 155012432 is 234210551.

It can be written as a sum of positive squares in 2 ways, for example, as 144096016 + 10916416 = 12004^2 + 3304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155012398 and 155012407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155012437) 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 in 3 ways as a sum of consecutive naturals, for example, 3248 + ... + 17904.

Almost surely, 2^155012432 is an apocalyptic number.

It is an amenable number.

155012432 is a deficient number, since it is larger than the sum of its proper divisors (145799044).

155012432 is a wasteful number, since it uses less digits than its factorization.

155012432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15326 (or 15320 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 155012432 is about 12450.3988691126. The cubic root of 155012432 is about 537.1828965713.

Adding to 155012432 its reverse (234210551), we get a palindrome (389222983).

The spelling of 155012432 in words is "one hundred fifty-five million, twelve thousand, four hundred thirty-two".