72144573 has 4 divisors (see below), whose sum is σ = 96192768. Its totient is φ = 48096380.

The previous prime is 72144571. The next prime is 72144581. The reversal of 72144573 is 37544127.

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.

It is a cyclic number.

It is not a de Polignac number, because 72144573 - 2¹ = 72144571 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72144571) 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, 12024093 + ... + 12024098.

It is an arithmetic number, because the mean of its divisors is an integer number (24048192).

Almost surely, 2^72144573 is an apocalyptic number.

It is an amenable number.

72144573 is a deficient number, since it is larger than the sum of its proper divisors (24048195).

72144573 is a wasteful number, since it uses less digits than its factorization.

72144573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24048194.

The product of its digits is 23520, while the sum is 33.

The square root of 72144573 is about 8493.7961477775. The cubic root of 72144573 is about 416.2950265570.

The spelling of 72144573 in words is "seventy-two million, one hundred forty-four thousand, five hundred seventy-three".