145404307 has 2 divisors, whose sum is σ = 145404308. Its totient is φ = 145404306.

The previous prime is 145404277. The next prime is 145404331. The reversal of 145404307 is 703404541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145404307 is a prime.

It is a super-2 number, since 2×145404307² = 42284824988300498, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145404107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72702153 + 72702154.

It is an arithmetic number, because the mean of its divisors is an integer number (72702154).

Almost surely, 2^145404307 is an apocalyptic number.

145404307 is a deficient number, since it is larger than the sum of its proper divisors (1).

145404307 is an equidigital number, since it uses as much as digits as its factorization.

145404307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 145404307 is about 12058.3708269401. The cubic root of 145404307 is about 525.8466243098.

Adding to 145404307 its reverse (703404541), we get a palindrome (848808848).

The spelling of 145404307 in words is "one hundred forty-five million, four hundred four thousand, three hundred seven".