72853573 has 4 divisors (see below), whose sum is σ = 78457708. Its totient is φ = 67249440.

The previous prime is 72853559. The next prime is 72853579. The reversal of 72853573 is 37535827.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46812964 + 26040609 = 6842^2 + 5103^2 .

It is a cyclic number.

It is not a de Polignac number, because 72853573 - 2⁵ = 72853541 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 (72853579) 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, 2802048 + ... + 2802073.

It is an arithmetic number, because the mean of its divisors is an integer number (19614427).

Almost surely, 2^72853573 is an apocalyptic number.

It is an amenable number.

72853573 is a deficient number, since it is larger than the sum of its proper divisors (5604135).

72853573 is a wasteful number, since it uses less digits than its factorization.

72853573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5604134.

The product of its digits is 176400, while the sum is 40.

The square root of 72853573 is about 8535.4304519456. The cubic root of 72853573 is about 417.6542951043.

The spelling of 72853573 in words is "seventy-two million, eight hundred fifty-three thousand, five hundred seventy-three".