155322432 has 84 divisors (see below), whose sum is σ = 456131676. Its totient is φ = 50503680.

The previous prime is 155322413. The next prime is 155322439. The reversal of 155322432 is 234223551.

It is a happy number.

155322432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 87160896 + 68161536 = 9336^2 + 8256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155322396 and 155322405.

It is not an unprimeable number, because it can be changed into a prime (155322439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20328 + ... + 26904.

It is an arithmetic number, because the mean of its divisors is an integer number (5430139).

Almost surely, 2^155322432 is an apocalyptic number.

155322432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155322432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228065838).

155322432 is an abundant number, since it is smaller than the sum of its proper divisors (300809244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155322432 is a wasteful number, since it uses less digits than its factorization.

155322432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636 (or 6623 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 155322432 is about 12462.8420514745. The cubic root of 155322432 is about 537.5407513361.

Adding to 155322432 its reverse (234223551), we get a palindrome (389545983).

The spelling of 155322432 in words is "one hundred fifty-five million, three hundred twenty-two thousand, four hundred thirty-two".