145819441 has 2 divisors, whose sum is σ = 145819442. Its totient is φ = 145819440.

The previous prime is 145819423. The next prime is 145819459. The reversal of 145819441 is 144918541.

It is a balanced prime because it is at equal distance from previous prime (145819423) and next prime (145819459).

It can be written as a sum of positive squares in only one way, i.e., 144600625 + 1218816 = 12025^2 + 1104^2 .

It is an emirp because it is prime and its reverse (144918541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145819441 - 2²³ = 137430833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145819441.

It is not a weakly prime, because it can be changed into another prime (145819481) 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, 72909720 + 72909721.

It is an arithmetic number, because the mean of its divisors is an integer number (72909721).

Almost surely, 2^145819441 is an apocalyptic number.

It is an amenable number.

145819441 is a deficient number, since it is larger than the sum of its proper divisors (1).

145819441 is an equidigital number, since it uses as much as digits as its factorization.

145819441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 37.

The square root of 145819441 is about 12075.5720775456. The cubic root of 145819441 is about 526.3465851838.

The spelling of 145819441 in words is "one hundred forty-five million, eight hundred nineteen thousand, four hundred forty-one".