145344403 has 2 divisors, whose sum is σ = 145344404. Its totient is φ = 145344402.

The previous prime is 145344401. The next prime is 145344457. The reversal of 145344403 is 304443541.

145344403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (304443541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145344403 - 2¹ = 145344401 is a prime.

It is a super-2 number, since 2×145344403² = 42249990966852818, which contains 22 as substring.

Together with 145344401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145344401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72672201 + 72672202.

It is an arithmetic number, because the mean of its divisors is an integer number (72672202).

Almost surely, 2^145344403 is an apocalyptic number.

145344403 is a deficient number, since it is larger than the sum of its proper divisors (1).

145344403 is an equidigital number, since it uses as much as digits as its factorization.

145344403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 145344403 is about 12055.8866534154. The cubic root of 145344403 is about 525.7744012244.

Adding to 145344403 its reverse (304443541), we get a palindrome (449787944).

The spelling of 145344403 in words is "one hundred forty-five million, three hundred forty-four thousand, four hundred three".