145144445 has 8 divisors (see below), whose sum is σ = 176773344. Its totient is φ = 114382224.

The previous prime is 145144429. The next prime is 145144471. The reversal of 145144445 is 544441541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145144445 - 2⁴ = 145144429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216299 + ... + 216968.

It is an arithmetic number, because the mean of its divisors is an integer number (22096668).

Almost surely, 2^145144445 is an apocalyptic number.

It is an amenable number.

145144445 is a deficient number, since it is larger than the sum of its proper divisors (31628899).

145144445 is an equidigital number, since it uses as much as digits as its factorization.

145144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433339.

The product of its digits is 25600, while the sum is 32.

The square root of 145144445 is about 12047.5908380057. The cubic root of 145144445 is about 525.5331786645.

Adding to 145144445 its reverse (544441541), we get a palindrome (689585986).

The spelling of 145144445 in words is "one hundred forty-five million, one hundred forty-four thousand, four hundred forty-five".