145120453 has 2 divisors, whose sum is σ = 145120454. Its totient is φ = 145120452.

The previous prime is 145120429. The next prime is 145120457. The reversal of 145120453 is 354021541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110628324 + 34492129 = 10518^2 + 5873^2 .

It is an emirp because it is prime and its reverse (354021541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145120453 - 2⁵ = 145120421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145120457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72560226 + 72560227.

It is an arithmetic number, because the mean of its divisors is an integer number (72560227).

Almost surely, 2^145120453 is an apocalyptic number.

It is an amenable number.

145120453 is a deficient number, since it is larger than the sum of its proper divisors (1).

145120453 is an equidigital number, since it uses as much as digits as its factorization.

145120453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145120453 is about 12046.5950791085. The cubic root of 145120453 is about 525.5042206455.

Adding to 145120453 its reverse (354021541), we get a palindrome (499141994).

It can be divided in two parts, 1451 and 20453, that added together give a square (21904 = 148²).

The spelling of 145120453 in words is "one hundred forty-five million, one hundred twenty thousand, four hundred fifty-three".