172916057 has 8 divisors (see below), whose sum is σ = 174958056. Its totient is φ = 170885632.

The previous prime is 172916041. The next prime is 172916063. The reversal of 172916057 is 750619271.

It can be written as a sum of positive squares in 4 ways, for example, as 151321 + 172764736 = 389^2 + 13144^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172916057 - 2⁴ = 172916041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172916057.

It is not an unprimeable number, because it can be changed into a prime (172916077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29213 + ... + 34629.

It is an arithmetic number, because the mean of its divisors is an integer number (21869757).

Almost surely, 2^172916057 is an apocalyptic number.

It is an amenable number.

172916057 is a deficient number, since it is larger than the sum of its proper divisors (2041999).

172916057 is a wasteful number, since it uses less digits than its factorization.

172916057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 172916057 is about 13149.7550167294. The cubic root of 172916057 is about 557.1153286264.

The spelling of 172916057 in words is "one hundred seventy-two million, nine hundred sixteen thousand, fifty-seven".