144238545 has 48 divisors (see below), whose sum is σ = 274233024. Its totient is φ = 69552000.

The previous prime is 144238541. The next prime is 144238553. The reversal of 144238545 is 545832441.

It is a happy number.

144238545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144238545 - 2² = 144238541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144238541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103755 + ... + 105135.

It is an arithmetic number, because the mean of its divisors is an integer number (5713188).

Almost surely, 2^144238545 is an apocalyptic number.

144238545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144238545 is a deficient number, since it is larger than the sum of its proper divisors (129994479).

144238545 is a wasteful number, since it uses less digits than its factorization.

144238545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1611 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 144238545 is about 12009.9352621070. The cubic root of 144238545 is about 524.4375472978.

The spelling of 144238545 in words is "one hundred forty-four million, two hundred thirty-eight thousand, five hundred forty-five".