447172051 has 2 divisors, whose sum is σ = 447172052. Its totient is φ = 447172050.

The previous prime is 447172043. The next prime is 447172057. The reversal of 447172051 is 150271744.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 447172051 - 2³ = 447172043 is a prime.

It is not a weakly prime, because it can be changed into another prime (447172057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223586025 + 223586026.

It is an arithmetic number, because the mean of its divisors is an integer number (223586026).

Almost surely, 2^447172051 is an apocalyptic number.

447172051 is a deficient number, since it is larger than the sum of its proper divisors (1).

447172051 is an equidigital number, since it uses as much as digits as its factorization.

447172051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 447172051 is about 21146.4429869423. The cubic root of 447172051 is about 764.7008105665.

The spelling of 447172051 in words is "four hundred forty-seven million, one hundred seventy-two thousand, fifty-one".