145301445 has 20 divisors (see below), whose sum is σ = 260467020. Its totient is φ = 77493888.

The previous prime is 145301437. The next prime is 145301501. The reversal of 145301445 is 544103541.

It is a happy number.

145301445 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 2 ways, for example, as 24147396 + 121154049 = 4914^2 + 11007^2 .

It is not a de Polignac number, because 145301445 - 2³ = 145301437 is a prime.

It is a super-2 number, since 2×145301445² = 42225019838176050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 178980 + ... + 179789.

It is an arithmetic number, because the mean of its divisors is an integer number (13023351).

Almost surely, 2^145301445 is an apocalyptic number.

145301445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145301445 is a deficient number, since it is larger than the sum of its proper divisors (115165575).

145301445 is an equidigital number, since it uses as much as digits as its factorization.

145301445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358786 (or 358777 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 145301445 is about 12054.1049024803. The cubic root of 145301445 is about 525.7225968163.

Adding to 145301445 its reverse (544103541), we get a palindrome (689404986).

The spelling of 145301445 in words is "one hundred forty-five million, three hundred one thousand, four hundred forty-five".