144251522 has 4 divisors (see below), whose sum is σ = 216377286. Its totient is φ = 72125760.

The previous prime is 144251521. The next prime is 144251543. The reversal of 144251522 is 225152441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225152441 = 653 ⋅344797.

It can be written as a sum of positive squares in only one way, i.e., 132273001 + 11978521 = 11501^2 + 3461^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144251491 and 144251500.

It is not an unprimeable number, because it can be changed into a prime (144251521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36062879 + ... + 36062882.

Almost surely, 2^144251522 is an apocalyptic number.

144251522 is a deficient number, since it is larger than the sum of its proper divisors (72125764).

144251522 is an equidigital number, since it uses as much as digits as its factorization.

144251522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72125763.

The product of its digits is 3200, while the sum is 26.

The square root of 144251522 is about 12010.4755109862. The cubic root of 144251522 is about 524.4532745363.

The spelling of 144251522 in words is "one hundred forty-four million, two hundred fifty-one thousand, five hundred twenty-two".