172057401 has 12 divisors (see below), whose sum is σ = 248734512. Its totient is φ = 114609336.

The previous prime is 172057387. The next prime is 172057433. The reversal of 172057401 is 104750271.

It is not a de Polignac number, because 172057401 - 2⁶ = 172057337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172057001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4450 + ... + 19076.

It is an arithmetic number, because the mean of its divisors is an integer number (20727876).

Almost surely, 2^172057401 is an apocalyptic number.

It is an amenable number.

172057401 is a deficient number, since it is larger than the sum of its proper divisors (76677111).

172057401 is a wasteful number, since it uses less digits than its factorization.

172057401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15940 (or 15937 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 172057401 is about 13117.0652586621. The cubic root of 172057401 is about 556.1916348980.

The spelling of 172057401 in words is "one hundred seventy-two million, fifty-seven thousand, four hundred one".