144722653 has 4 divisors (see below), whose sum is σ = 144750688. Its totient is φ = 144694620.

The previous prime is 144722623. The next prime is 144722659. The reversal of 144722653 is 356227441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356227441 = 349 ⋅1020709.

It is a cyclic number.

It is not a de Polignac number, because 144722653 - 2⁵ = 144722621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144722659) 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, 3783 + ... + 17428.

It is an arithmetic number, because the mean of its divisors is an integer number (36187672).

Almost surely, 2^144722653 is an apocalyptic number.

It is an amenable number.

144722653 is a deficient number, since it is larger than the sum of its proper divisors (28035).

144722653 is an equidigital number, since it uses as much as digits as its factorization.

144722653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28034.

The product of its digits is 40320, while the sum is 34.

The square root of 144722653 is about 12030.0728592972. The cubic root of 144722653 is about 525.0236155666.

The spelling of 144722653 in words is "one hundred forty-four million, seven hundred twenty-two thousand, six hundred fifty-three".