145465445 has 4 divisors (see below), whose sum is σ = 174558540. Its totient is φ = 116372352.

The previous prime is 145465433. The next prime is 145465471. The reversal of 145465445 is 544564541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544564541 = 5227 ⋅104183.

It can be written as a sum of positive squares in 2 ways, for example, as 109453444 + 36012001 = 10462^2 + 6001^2 .

It is a cyclic number.

It is not a de Polignac number, because 145465445 - 2⁴ = 145465429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145465399 and 145465408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14546540 + ... + 14546549.

It is an arithmetic number, because the mean of its divisors is an integer number (43639635).

Almost surely, 2^145465445 is an apocalyptic number.

It is an amenable number.

145465445 is a deficient number, since it is larger than the sum of its proper divisors (29093095).

145465445 is an equidigital number, since it uses as much as digits as its factorization.

145465445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29093094.

The product of its digits is 192000, while the sum is 38.

The square root of 145465445 is about 12060.9056459289. The cubic root of 145465445 is about 525.9203147130.

It can be divided in two parts, 14546 and 5445, that added together give a palindrome (19991).

The spelling of 145465445 in words is "one hundred forty-five million, four hundred sixty-five thousand, four hundred forty-five".