172555953 has 8 divisors (see below), whose sum is σ = 230157408. Its totient is φ = 114995904.

The previous prime is 172555949. The next prime is 172555963. The reversal of 172555953 is 359555271.

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

It is not a de Polignac number, because 172555953 - 2² = 172555949 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172555963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225 + ... + 18617.

It is an arithmetic number, because the mean of its divisors is an integer number (28769676).

Almost surely, 2^172555953 is an apocalyptic number.

It is an amenable number.

172555953 is a deficient number, since it is larger than the sum of its proper divisors (57601455).

172555953 is a wasteful number, since it uses less digits than its factorization.

172555953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20703.

The product of its digits is 236250, while the sum is 42.

The square root of 172555953 is about 13136.0554581655. The cubic root of 172555953 is about 556.7283221815.

The spelling of 172555953 in words is "one hundred seventy-two million, five hundred fifty-five thousand, nine hundred fifty-three".