172471465 has 4 divisors (see below), whose sum is σ = 206965764. Its totient is φ = 137977168.

The previous prime is 172471447. The next prime is 172471469. The reversal of 172471465 is 564174271.

172471465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39576681 + 132894784 = 6291^2 + 11528^2 .

It is a cyclic number.

It is not a de Polignac number, because 172471465 - 2⁵ = 172471433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172471469) 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, 17247142 + ... + 17247151.

It is an arithmetic number, because the mean of its divisors is an integer number (51741441).

Almost surely, 2^172471465 is an apocalyptic number.

It is an amenable number.

172471465 is a deficient number, since it is larger than the sum of its proper divisors (34494299).

172471465 is an equidigital number, since it uses as much as digits as its factorization.

172471465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34494298.

The product of its digits is 47040, while the sum is 37.

The square root of 172471465 is about 13132.8391827510. The cubic root of 172471465 is about 556.6374443327.

The spelling of 172471465 in words is "one hundred seventy-two million, four hundred seventy-one thousand, four hundred sixty-five".