172514047 has 2 divisors, whose sum is σ = 172514048. Its totient is φ = 172514046.

The previous prime is 172514021. The next prime is 172514059. The reversal of 172514047 is 740415271.

It is a strong prime.

It is an emirp because it is prime and its reverse (740415271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172514047 - 2⁷ = 172513919 is a prime.

It is a super-2 number, since 2×172514047² = 59522192824636418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172514087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86257023 + 86257024.

It is an arithmetic number, because the mean of its divisors is an integer number (86257024).

Almost surely, 2^172514047 is an apocalyptic number.

172514047 is a deficient number, since it is larger than the sum of its proper divisors (1).

172514047 is an equidigital number, since it uses as much as digits as its factorization.

172514047 is an evil number, because the sum of its binary digits is even.

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

The square root of 172514047 is about 13134.4602858283. The cubic root of 172514047 is about 556.6832505288.

The spelling of 172514047 in words is "one hundred seventy-two million, five hundred fourteen thousand, forty-seven".