145945453 has 2 divisors, whose sum is σ = 145945454. Its totient is φ = 145945452.

The previous prime is 145945451. The next prime is 145945463. The reversal of 145945453 is 354549541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144312169 + 1633284 = 12013^2 + 1278^2 .

It is an emirp because it is prime and its reverse (354549541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145945453 - 2¹ = 145945451 is a prime.

Together with 145945451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145945451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72972726 + 72972727.

It is an arithmetic number, because the mean of its divisors is an integer number (72972727).

Almost surely, 2^145945453 is an apocalyptic number.

It is an amenable number.

145945453 is a deficient number, since it is larger than the sum of its proper divisors (1).

145945453 is an equidigital number, since it uses as much as digits as its factorization.

145945453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 40.

The square root of 145945453 is about 12080.7885918097. The cubic root of 145945453 is about 526.4981582276.

The spelling of 145945453 in words is "one hundred forty-five million, nine hundred forty-five thousand, four hundred fifty-three".