144557723 has 4 divisors (see below), whose sum is σ = 144834648. Its totient is φ = 144280800.

The previous prime is 144557717. The next prime is 144557741. The reversal of 144557723 is 327755441.

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

It is a cyclic number.

It is not a de Polignac number, because 144557723 - 2⁸ = 144557467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144557753) 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, 137678 + ... + 138723.

It is an arithmetic number, because the mean of its divisors is an integer number (36208662).

Almost surely, 2^144557723 is an apocalyptic number.

144557723 is a deficient number, since it is larger than the sum of its proper divisors (276925).

144557723 is an equidigital number, since it uses as much as digits as its factorization.

144557723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276924.

The product of its digits is 117600, while the sum is 38.

The square root of 144557723 is about 12023.2160007213. The cubic root of 144557723 is about 524.8240958686.

The spelling of 144557723 in words is "one hundred forty-four million, five hundred fifty-seven thousand, seven hundred twenty-three".