145223300 has 36 divisors (see below), whose sum is σ = 326007780. Its totient is φ = 56085120.

The previous prime is 145223269. The next prime is 145223303. The reversal of 145223300 is 3322541.

It is a happy number.

145223300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 454276 + 144769024 = 674^2 + 12032^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (145223303) 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, 22139 + ... + 27938.

Almost surely, 2^145223300 is an apocalyptic number.

145223300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145223300 is an abundant number, since it is smaller than the sum of its proper divisors (180784480).

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

145223300 is a wasteful number, since it uses less digits than its factorization.

145223300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50120 (or 50113 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 145223300 is about 12050.8630396333. The cubic root of 145223300 is about 525.6283331072.

Adding to 145223300 its reverse (3322541), we get a palindrome (148545841).

The spelling of 145223300 in words is "one hundred forty-five million, two hundred twenty-three thousand, three hundred".