145230445 has 4 divisors (see below), whose sum is σ = 174276540. Its totient is φ = 116184352.

The previous prime is 145230413. The next prime is 145230451. The reversal of 145230445 is 544032541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51566761 + 93663684 = 7181^2 + 9678^2 .

It is a cyclic number.

It is not a de Polignac number, because 145230445 - 2⁵ = 145230413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14523040 + ... + 14523049.

It is an arithmetic number, because the mean of its divisors is an integer number (43569135).

Almost surely, 2^145230445 is an apocalyptic number.

It is an amenable number.

145230445 is a deficient number, since it is larger than the sum of its proper divisors (29046095).

145230445 is an equidigital number, since it uses as much as digits as its factorization.

145230445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29046094.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 145230445 is about 12051.1594877837. The cubic root of 145230445 is about 525.6369532869.

Adding to 145230445 its reverse (544032541), we get a palindrome (689262986).

The spelling of 145230445 in words is "one hundred forty-five million, two hundred thirty thousand, four hundred forty-five".