72081353 has 4 divisors (see below), whose sum is σ = 72399120. Its totient is φ = 71763588.

The previous prime is 72081349. The next prime is 72081391. The reversal of 72081353 is 35318027.

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 72081353 - 2² = 72081349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72081253) 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, 158543 + ... + 158996.

It is an arithmetic number, because the mean of its divisors is an integer number (18099780).

Almost surely, 2^72081353 is an apocalyptic number.

It is an amenable number.

72081353 is a deficient number, since it is larger than the sum of its proper divisors (317767).

72081353 is a wasteful number, since it uses less digits than its factorization.

72081353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317766.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 72081353 is about 8490.0737923766. The cubic root of 72081353 is about 416.1733918000.

The spelling of 72081353 in words is "seventy-two million, eighty-one thousand, three hundred fifty-three".