145524220 has 96 divisors (see below), whose sum is σ = 334430208. Its totient is φ = 53044992.

The previous prime is 145524209. The next prime is 145524221. The reversal of 145524220 is 22425541.

145524220 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 not an unprimeable number, because it can be changed into a prime (145524221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1145797 + ... + 1145923.

It is an arithmetic number, because the mean of its divisors is an integer number (3483648).

Almost surely, 2^145524220 is an apocalyptic number.

145524220 is a gapful number since it is divisible by the number (10) 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 145524220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167215104).

145524220 is an abundant number, since it is smaller than the sum of its proper divisors (188905988).

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

145524220 is a wasteful number, since it uses less digits than its factorization.

145524220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 145524220 is about 12063.3419913389. The cubic root of 145524220 is about 525.9911374990.

Adding to 145524220 its reverse (22425541), we get a palindrome (167949761).

The spelling of 145524220 in words is "one hundred forty-five million, five hundred twenty-four thousand, two hundred twenty".