145197443 has 2 divisors, whose sum is σ = 145197444. Its totient is φ = 145197442.

The previous prime is 145197433. The next prime is 145197463. The reversal of 145197443 is 344791541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145197443 - 2⁶ = 145197379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145197397 and 145197406.

It is not a weakly prime, because it can be changed into another prime (145197433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72598721 + 72598722.

It is an arithmetic number, because the mean of its divisors is an integer number (72598722).

Almost surely, 2^145197443 is an apocalyptic number.

145197443 is a deficient number, since it is larger than the sum of its proper divisors (1).

145197443 is an equidigital number, since it uses as much as digits as its factorization.

145197443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 145197443 is about 12049.7901641481. The cubic root of 145197443 is about 525.5971352243.

The spelling of 145197443 in words is "one hundred forty-five million, one hundred ninety-seven thousand, four hundred forty-three".