145040453 has 4 divisors (see below), whose sum is σ = 145114380. Its totient is φ = 144966528.

The previous prime is 145040437. The next prime is 145040479. The reversal of 145040453 is 354040541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 102556129 + 42484324 = 10127^2 + 6518^2 .

It is a cyclic number.

It is not a de Polignac number, because 145040453 - 2⁴ = 145040437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145040153) 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, 33938 + ... + 37971.

It is an arithmetic number, because the mean of its divisors is an integer number (36278595).

Almost surely, 2^145040453 is an apocalyptic number.

It is an amenable number.

145040453 is a deficient number, since it is larger than the sum of its proper divisors (73927).

145040453 is an equidigital number, since it uses as much as digits as its factorization.

145040453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73926.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 145040453 is about 12043.2741810523. The cubic root of 145040453 is about 525.4076386584.

Adding to 145040453 its reverse (354040541), we get a palindrome (499080994).

The spelling of 145040453 in words is "one hundred forty-five million, forty thousand, four hundred fifty-three".