172072063 has 4 divisors (see below), whose sum is σ = 172622128. Its totient is φ = 171522000.

The previous prime is 172072057. The next prime is 172072067. The reversal of 172072063 is 360270271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172072063 - 2¹⁷ = 171940991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172072067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274563 + ... + 275188.

It is an arithmetic number, because the mean of its divisors is an integer number (43155532).

Almost surely, 2^172072063 is an apocalyptic number.

172072063 is a deficient number, since it is larger than the sum of its proper divisors (550065).

172072063 is an equidigital number, since it uses as much as digits as its factorization.

172072063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550064.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 172072063 is about 13117.6241370151. The cubic root of 172072063 is about 556.2074332111.

The spelling of 172072063 in words is "one hundred seventy-two million, seventy-two thousand, sixty-three".