172455457 has 8 divisors (see below), whose sum is σ = 182207360. Its totient is φ = 162771120.

The previous prime is 172455433. The next prime is 172455473. The reversal of 172455457 is 754554271.

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 172455457 - 2²⁷ = 38237729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172450457) 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, 11598 + ... + 21895.

It is an arithmetic number, because the mean of its divisors is an integer number (22775920).

Almost surely, 2^172455457 is an apocalyptic number.

It is an amenable number.

172455457 is a deficient number, since it is larger than the sum of its proper divisors (9751903).

172455457 is a wasteful number, since it uses less digits than its factorization.

172455457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33783.

The product of its digits is 196000, while the sum is 40.

The square root of 172455457 is about 13132.2297040525. The cubic root of 172455457 is about 556.6202222995.

The spelling of 172455457 in words is "one hundred seventy-two million, four hundred fifty-five thousand, four hundred fifty-seven".