172563157 has 8 divisors (see below), whose sum is σ = 188455680. Its totient is φ = 157044720.

The previous prime is 172563133. The next prime is 172563161. The reversal of 172563157 is 751365271.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172563157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172564157) 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, 92557 + ... + 94402.

It is an arithmetic number, because the mean of its divisors is an integer number (23556960).

Almost surely, 2^172563157 is an apocalyptic number.

It is an amenable number.

172563157 is a deficient number, since it is larger than the sum of its proper divisors (15892523).

172563157 is a wasteful number, since it uses less digits than its factorization.

172563157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187043.

The product of its digits is 44100, while the sum is 37.

The square root of 172563157 is about 13136.3296624285. The cubic root of 172563157 is about 556.7360696492.

The spelling of 172563157 in words is "one hundred seventy-two million, five hundred sixty-three thousand, one hundred fifty-seven".