145820453 has 2 divisors, whose sum is σ = 145820454. Its totient is φ = 145820452.

The previous prime is 145820443. The next prime is 145820531. The reversal of 145820453 is 354028541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99062209 + 46758244 = 9953^2 + 6838^2 .

It is a cyclic number.

It is not a de Polignac number, because 145820453 - 2¹² = 145816357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145820443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72910226 + 72910227.

It is an arithmetic number, because the mean of its divisors is an integer number (72910227).

Almost surely, 2^145820453 is an apocalyptic number.

It is an amenable number.

145820453 is a deficient number, since it is larger than the sum of its proper divisors (1).

145820453 is an equidigital number, since it uses as much as digits as its factorization.

145820453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 145820453 is about 12075.6139802496. The cubic root of 145820453 is about 526.3478028119.

Adding to 145820453 its reverse (354028541), we get a palindrome (499848994).

The spelling of 145820453 in words is "one hundred forty-five million, eight hundred twenty thousand, four hundred fifty-three".