144750572521 has 3 divisors (see below), whose sum is σ = 144750952983. Its totient is φ = 144750192060.

The previous prime is 144750572489. The next prime is 144750572539. The reversal of 144750572521 is 125275057441.

The square root of 144750572521 is 380461.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 125323788121 + 19426784400 = 354011^2 + 139380^2 .

It is not a de Polignac number, because 144750572521 - 2⁵ = 144750572489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144750572621) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 190231 + ... + 570691.

It is an arithmetic number, because the mean of its divisors is an integer number (48250317661).

Almost surely, 2^144750572521 is an apocalyptic number.

144750572521 is the 380461-st square number.

144750572521 is the 190231-st centered octagonal number.

It is an amenable number.

144750572521 is a deficient number, since it is larger than the sum of its proper divisors (380462).

144750572521 is an frugal number, since it uses more digits than its factorization.

144750572521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760922 (or 380461 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 43.

The spelling of 144750572521 in words is "one hundred forty-four billion, seven hundred fifty million, five hundred seventy-two thousand, five hundred twenty-one".