145503023 has 4 divisors (see below), whose sum is σ = 148598880. Its totient is φ = 142407168.

The previous prime is 145503019. The next prime is 145503031. The reversal of 145503023 is 320305541.

145503023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145503023 - 2² = 145503019 is a prime.

It is a super-2 number, since 2×145503023² = 42342259404277058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145503023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145503223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547858 + ... + 1547951.

It is an arithmetic number, because the mean of its divisors is an integer number (37149720).

Almost surely, 2^145503023 is an apocalyptic number.

145503023 is a deficient number, since it is larger than the sum of its proper divisors (3095857).

145503023 is an equidigital number, since it uses as much as digits as its factorization.

145503023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095856.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 145503023 is about 12062.4633885455. The cubic root of 145503023 is about 525.9655977057.

Adding to 145503023 its reverse (320305541), we get a palindrome (465808564).

The spelling of 145503023 in words is "one hundred forty-five million, five hundred three thousand, twenty-three".