145135452 has 144 divisors (see below), whose sum is σ = 452753280. Its totient is φ = 35683200.

The previous prime is 145135447. The next prime is 145135481. The reversal of 145135452 is 254531541.

145135452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122302 + ... + 123482.

It is an arithmetic number, because the mean of its divisors is an integer number (3144120).

Almost surely, 2^145135452 is an apocalyptic number.

145135452 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 145135452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226376640).

145135452 is an abundant number, since it is smaller than the sum of its proper divisors (307617828).

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

145135452 is a wasteful number, since it uses less digits than its factorization.

145135452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 1223 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 145135452 is about 12047.2176040777. The cubic root of 145135452 is about 525.5223246093.

Adding to 145135452 its reverse (254531541), we get a palindrome (399666993).

The spelling of 145135452 in words is "one hundred forty-five million, one hundred thirty-five thousand, four hundred fifty-two".