145342453 has 4 divisors (see below), whose sum is σ = 146675980. Its totient is φ = 144008928.

The previous prime is 145342447. The next prime is 145342481. The reversal of 145342453 is 354243541.

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 76003524 + 69338929 = 8718^2 + 8327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145342453 is a prime.

It is a super-2 number, since 2×145342453² = 42248857288114418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145342553) 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, 666600 + ... + 666817.

It is an arithmetic number, because the mean of its divisors is an integer number (36668995).

Almost surely, 2^145342453 is an apocalyptic number.

It is an amenable number.

145342453 is a deficient number, since it is larger than the sum of its proper divisors (1333527).

145342453 is a wasteful number, since it uses less digits than its factorization.

145342453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333526.

The product of its digits is 28800, while the sum is 31.

The square root of 145342453 is about 12055.8057797893. The cubic root of 145342453 is about 525.7720498790.

Adding to 145342453 its reverse (354243541), we get a palindrome (499585994).

The spelling of 145342453 in words is "one hundred forty-five million, three hundred forty-two thousand, four hundred fifty-three".