72573373 has 2 divisors, whose sum is σ = 72573374. Its totient is φ = 72573372.

The previous prime is 72573367. The next prime is 72573383. The reversal of 72573373 is 37337527.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40729924 + 31843449 = 6382^2 + 5643^2 .

It is a cyclic number.

It is not a de Polignac number, because 72573373 - 2⁹ = 72572861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72573313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36286686 + 36286687.

It is an arithmetic number, because the mean of its divisors is an integer number (36286687).

Almost surely, 2^72573373 is an apocalyptic number.

It is an amenable number.

72573373 is a deficient number, since it is larger than the sum of its proper divisors (1).

72573373 is an equidigital number, since it uses as much as digits as its factorization.

72573373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92610, while the sum is 37.

The square root of 72573373 is about 8519.0007043080. Note that the first 3 decimals coincide. The cubic root of 72573373 is about 417.1181645203.

The spelling of 72573373 in words is "seventy-two million, five hundred seventy-three thousand, three hundred seventy-three".