145023453 has 20 divisors (see below), whose sum is σ = 219085020. Its totient is φ = 95591232.

The previous prime is 145023421. The next prime is 145023491. The reversal of 145023453 is 354320541.

145023453 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 2 ways, for example, as 28965924 + 116057529 = 5382^2 + 10773^2 .

It is not a de Polignac number, because 145023453 - 2⁵ = 145023421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145023253) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2850 + ... + 17267.

It is an arithmetic number, because the mean of its divisors is an integer number (10954251).

Almost surely, 2^145023453 is an apocalyptic number.

It is an amenable number.

145023453 is a deficient number, since it is larger than the sum of its proper divisors (74061567).

145023453 is an equidigital number, since it uses as much as digits as its factorization.

145023453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20218 (or 20209 counting only the distinct ones).

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

The square root of 145023453 is about 12042.5683722369. The cubic root of 145023453 is about 525.3871104111.

Adding to 145023453 its reverse (354320541), we get a palindrome (499343994).

It can be divided in two parts, 14502 and 3453, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 145023453 in words is "one hundred forty-five million, twenty-three thousand, four hundred fifty-three".