72231853 has 4 divisors (see below), whose sum is σ = 72261568. Its totient is φ = 72202140.

The previous prime is 72231811. The next prime is 72231857. The reversal of 72231853 is 35813227.

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 72231853 - 2¹³ = 72223661 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 (72231857) 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, 10851 + ... + 16192.

It is an arithmetic number, because the mean of its divisors is an integer number (18065392).

Almost surely, 2^72231853 is an apocalyptic number.

It is an amenable number.

72231853 is a deficient number, since it is larger than the sum of its proper divisors (29715).

72231853 is a wasteful number, since it uses less digits than its factorization.

72231853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29714.

The product of its digits is 10080, while the sum is 31.

The square root of 72231853 is about 8498.9324623743. The cubic root of 72231853 is about 416.4628358412.

The spelling of 72231853 in words is "seventy-two million, two hundred thirty-one thousand, eight hundred fifty-three".