145145144 has 16 divisors (see below), whose sum is σ = 272587920. Its totient is φ = 72455040.

The previous prime is 145145141. The next prime is 145145153. The reversal of 145145144 is 441541541.

145145144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145145144² = 42134225653561472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145145141) 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, 9329 + ... + 19424.

It is an arithmetic number, because the mean of its divisors is an integer number (17036745).

Almost surely, 2^145145144 is an apocalyptic number.

It is an amenable number.

145145144 is a deficient number, since it is larger than the sum of its proper divisors (127442776).

145145144 is a wasteful number, since it uses less digits than its factorization.

145145144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29390 (or 29386 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 145145144 is about 12047.6198479202. The cubic root of 145145144 is about 525.5340223002.

Adding to 145145144 its reverse (441541541), we get a palindrome (586686685).

The spelling of 145145144 in words is "one hundred forty-five million, one hundred forty-five thousand, one hundred forty-four".