155501332 has 36 divisors (see below), whose sum is σ = 321414240. Its totient is φ = 64482480.

The previous prime is 155501279. The next prime is 155501341. The reversal of 155501332 is 233105551.

It is a junction number, because it is equal to n+sod(n) for n = 155501297 and 155501306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24019 + ... + 29797.

Almost surely, 2^155501332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155501332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160707120).

155501332 is an abundant number, since it is smaller than the sum of its proper divisors (165912908).

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

155501332 is a wasteful number, since it uses less digits than its factorization.

155501332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5852 (or 5819 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 155501332 is about 12470.0173215597. The cubic root of 155501332 is about 537.7470515284.

Adding to 155501332 its reverse (233105551), we get a palindrome (388606883).

The spelling of 155501332 in words is "one hundred fifty-five million, five hundred one thousand, three hundred thirty-two".