72287953 has 2 divisors, whose sum is σ = 72287954. Its totient is φ = 72287952.

The previous prime is 72287933. The next prime is 72287977. The reversal of 72287953 is 35978227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72114064 + 173889 = 8492^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 72287953 - 2²¹ = 70190801 is a prime.

It is not a weakly prime, because it can be changed into another prime (72287933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36143976 + 36143977.

It is an arithmetic number, because the mean of its divisors is an integer number (36143977).

Almost surely, 2^72287953 is an apocalyptic number.

It is an amenable number.

72287953 is a deficient number, since it is larger than the sum of its proper divisors (1).

72287953 is an equidigital number, since it uses as much as digits as its factorization.

72287953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 72287953 is about 8502.2322363012. The cubic root of 72287953 is about 416.5706254021.

The spelling of 72287953 in words is "seventy-two million, two hundred eighty-seven thousand, nine hundred fifty-three".