172701056 has 64 divisors (see below), whose sum is σ = 378032400. Its totient is φ = 77936640.

The previous prime is 172701049. The next prime is 172701097. The reversal of 172701056 is 650107271.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243230 + ... + 243938.

Almost surely, 2^172701056 is an apocalyptic number.

172701056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172701056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189016200).

172701056 is an abundant number, since it is smaller than the sum of its proper divisors (205331344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172701056 is a wasteful number, since it uses less digits than its factorization.

172701056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 172701056 is about 13141.5773786863. The cubic root of 172701056 is about 556.8843301610.

The spelling of 172701056 in words is "one hundred seventy-two million, seven hundred one thousand, fifty-six".