145355444 has 12 divisors (see below), whose sum is σ = 273939204. Its totient is φ = 67087104.

The previous prime is 145355429. The next prime is 145355449. The reversal of 145355444 is 444553541.

145355444 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 48135844 + 97219600 = 6938^2 + 9860^2 .

It is a super-2 number, since 2×145355444² = 42256410200874272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145355449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397597 + ... + 1397700.

It is an arithmetic number, because the mean of its divisors is an integer number (22828267).

Almost surely, 2^145355444 is an apocalyptic number.

It is an amenable number.

145355444 is a deficient number, since it is larger than the sum of its proper divisors (128583760).

145355444 is a wasteful number, since it uses less digits than its factorization.

145355444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795314 (or 2795312 counting only the distinct ones).

The product of its digits is 96000, while the sum is 35.

The square root of 145355444 is about 12056.3445538024. The cubic root of 145355444 is about 525.7877142658.

The spelling of 145355444 in words is "one hundred forty-five million, three hundred fifty-five thousand, four hundred forty-four".