145045445 has 8 divisors (see below), whose sum is σ = 184293144. Its totient is φ = 109210624.

The previous prime is 145045339. The next prime is 145045451. The reversal of 145045445 is 544540541.

145045445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 44063044 + 100982401 = 6638^2 + 10049^2 .

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 145045445 - 2⁸ = 145045189 is a prime.

It is a super-2 number, since 2×145045445² = 42076362230496050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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, 853124 + ... + 853293.

It is an arithmetic number, because the mean of its divisors is an integer number (23036643).

Almost surely, 2^145045445 is an apocalyptic number.

It is an amenable number.

145045445 is a deficient number, since it is larger than the sum of its proper divisors (39247699).

145045445 is a wasteful number, since it uses less digits than its factorization.

145045445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706439.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 145045445 is about 12043.4814318784. The cubic root of 145045445 is about 525.4136664131.

Adding to 145045445 its reverse (544540541), we get a palindrome (689585986).

The spelling of 145045445 in words is "one hundred forty-five million, forty-five thousand, four hundred forty-five".