72175373 has 2 divisors, whose sum is σ = 72175374. Its totient is φ = 72175372.

The previous prime is 72175361. The next prime is 72175391. The reversal of 72175373 is 37357127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71859529 + 315844 = 8477^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 72175373 - 2⁶ = 72175309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72175303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36087686 + 36087687.

It is an arithmetic number, because the mean of its divisors is an integer number (36087687).

Almost surely, 2^72175373 is an apocalyptic number.

It is an amenable number.

72175373 is a deficient number, since it is larger than the sum of its proper divisors (1).

72175373 is an equidigital number, since it uses as much as digits as its factorization.

72175373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30870, while the sum is 35.

The square root of 72175373 is about 8495.6090423230. The cubic root of 72175373 is about 416.3542597609.

The spelling of 72175373 in words is "seventy-two million, one hundred seventy-five thousand, three hundred seventy-three".