145523232 has 72 divisors (see below), whose sum is σ = 415134720. Its totient is φ = 48355200.

The previous prime is 145523221. The next prime is 145523239. The reversal of 145523232 is 232325541.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×145523232² = 42354022103451648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145523196 and 145523205.

It is not an unprimeable number, because it can be changed into a prime (145523239) 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, 125857 + ... + 127007.

It is an arithmetic number, because the mean of its divisors is an integer number (5765760).

Almost surely, 2^145523232 is an apocalyptic number.

145523232 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 145523232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207567360).

145523232 is an abundant number, since it is smaller than the sum of its proper divisors (269611488).

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

145523232 is a wasteful number, since it uses less digits than its factorization.

145523232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606 (or 1595 counting only the distinct ones).

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

The square root of 145523232 is about 12063.3010407599. The cubic root of 145523232 is about 525.9899471349.

Adding to 145523232 its reverse (232325541), we get a palindrome (377848773).

The spelling of 145523232 in words is "one hundred forty-five million, five hundred twenty-three thousand, two hundred thirty-two".