172857401 has 8 divisors (see below), whose sum is σ = 174640704. Its totient is φ = 171082800.

The previous prime is 172857389. The next prime is 172857403. The reversal of 172857401 is 104758271.

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 172857401 - 2²² = 168663097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172857403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42290 + ... + 46196.

It is an arithmetic number, because the mean of its divisors is an integer number (21830088).

Almost surely, 2^172857401 is an apocalyptic number.

It is an amenable number.

172857401 is a deficient number, since it is larger than the sum of its proper divisors (1783303).

172857401 is a wasteful number, since it uses less digits than its factorization.

172857401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 172857401 is about 13147.5245198478. The cubic root of 172857401 is about 557.0523272430.

The spelling of 172857401 in words is "one hundred seventy-two million, eight hundred fifty-seven thousand, four hundred one".