145544405 has 4 divisors (see below), whose sum is σ = 174653292. Its totient is φ = 116435520.

The previous prime is 145544369. The next prime is 145544419. The reversal of 145544405 is 504445541.

145544405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 78730129 + 66814276 = 8873^2 + 8174^2 .

It is not a de Polignac number, because 145544405 - 2¹⁰ = 145543381 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 3 ways as a sum of consecutive naturals, for example, 14554436 + ... + 14554445.

It is an arithmetic number, because the mean of its divisors is an integer number (43663323).

Almost surely, 2^145544405 is an apocalyptic number.

It is an amenable number.

145544405 is a deficient number, since it is larger than the sum of its proper divisors (29108887).

145544405 is an equidigital number, since it uses as much as digits as its factorization.

145544405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29108886.

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

The square root of 145544405 is about 12064.1785878691. The cubic root of 145544405 is about 526.0154556510.

Adding to 145544405 its reverse (504445541), we get a palindrome (649989946).

The spelling of 145544405 in words is "one hundred forty-five million, five hundred forty-four thousand, four hundred five".