145214453 has 4 divisors (see below), whose sum is σ = 145252140. Its totient is φ = 145176768.

The previous prime is 145214449. The next prime is 145214471. The reversal of 145214453 is 354412541.

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 132204004 + 13010449 = 11498^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 145214453 - 2² = 145214449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145214353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12308 + ... + 21021.

It is an arithmetic number, because the mean of its divisors is an integer number (36313035).

Almost surely, 2^145214453 is an apocalyptic number.

It is an amenable number.

145214453 is a deficient number, since it is larger than the sum of its proper divisors (37687).

145214453 is an equidigital number, since it uses as much as digits as its factorization.

145214453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37686.

The product of its digits is 9600, while the sum is 29.

The square root of 145214453 is about 12050.4959648970. The cubic root of 145214453 is about 525.6176591352.

Adding to 145214453 its reverse (354412541), we get a palindrome (499626994).

The spelling of 145214453 in words is "one hundred forty-five million, two hundred fourteen thousand, four hundred fifty-three".