145531332 has 72 divisors (see below), whose sum is σ = 375065600. Its totient is φ = 47573568.

The previous prime is 145531301. The next prime is 145531333. The reversal of 145531332 is 233135541.

It is a junction number, because it is equal to n+sod(n) for n = 145531296 and 145531305.

It is not an unprimeable number, because it can be changed into a prime (145531333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635394 + ... + 635622.

Almost surely, 2^145531332 is an apocalyptic number.

145531332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145531332 is an abundant number, since it is smaller than the sum of its proper divisors (229534268).

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

145531332 is a wasteful number, since it uses less digits than its factorization.

145531332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 500 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 145531332 is about 12063.6367650887. The cubic root of 145531332 is about 525.9997060338. Note that the first 3 decimals are identical.

Adding to 145531332 its reverse (233135541), we get a palindrome (378666873).

The spelling of 145531332 in words is "one hundred forty-five million, five hundred thirty-one thousand, three hundred thirty-two".