447172513 has 2 divisors, whose sum is σ = 447172514. Its totient is φ = 447172512.

The previous prime is 447172507. The next prime is 447172519. The reversal of 447172513 is 315271744.

It is a balanced prime because it is at equal distance from previous prime (447172507) and next prime (447172519).

It can be written as a sum of positive squares in only one way, i.e., 314991504 + 132181009 = 17748^2 + 11497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447172513 is a prime.

It is not a weakly prime, because it can be changed into another prime (447172519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223586256 + 223586257.

It is an arithmetic number, because the mean of its divisors is an integer number (223586257).

Almost surely, 2^447172513 is an apocalyptic number.

It is an amenable number.

447172513 is a deficient number, since it is larger than the sum of its proper divisors (1).

447172513 is an equidigital number, since it uses as much as digits as its factorization.

447172513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 447172513 is about 21146.4539107624. The cubic root of 447172513 is about 764.7010739191.

The spelling of 447172513 in words is "four hundred forty-seven million, one hundred seventy-two thousand, five hundred thirteen".