145445413 has 4 divisors (see below), whose sum is σ = 145471788. Its totient is φ = 145419040.

The previous prime is 145445407. The next prime is 145445423. The reversal of 145445413 is 314544541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314544541 = 6007 ⋅52363.

It can be written as a sum of positive squares in 2 ways, for example, as 77827684 + 67617729 = 8822^2 + 8223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145445413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145445423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1408 + ... + 17113.

It is an arithmetic number, because the mean of its divisors is an integer number (36367947).

Almost surely, 2^145445413 is an apocalyptic number.

It is an amenable number.

145445413 is a deficient number, since it is larger than the sum of its proper divisors (26375).

145445413 is an equidigital number, since it uses as much as digits as its factorization.

145445413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26374.

The product of its digits is 19200, while the sum is 31.

The square root of 145445413 is about 12060.0751656032. The cubic root of 145445413 is about 525.8961721652.

Adding to 145445413 its reverse (314544541), we get a palindrome (459989954).

The spelling of 145445413 in words is "one hundred forty-five million, four hundred forty-five thousand, four hundred thirteen".