172117053 has 24 divisors (see below), whose sum is σ = 257377536. Its totient is φ = 110721600.

The previous prime is 172117019. The next prime is 172117069. The reversal of 172117053 is 350711271.

It is a happy number.

It is not a de Polignac number, because 172117053 - 2¹⁰ = 172116029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172117013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129633 + ... + 130953.

It is an arithmetic number, because the mean of its divisors is an integer number (10724064).

Almost surely, 2^172117053 is an apocalyptic number.

It is an amenable number.

172117053 is a deficient number, since it is larger than the sum of its proper divisors (85260483).

172117053 is a wasteful number, since it uses less digits than its factorization.

172117053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 172117053 is about 13119.3388934047. The cubic root of 172117053 is about 556.2559043602.

The spelling of 172117053 in words is "one hundred seventy-two million, one hundred seventeen thousand, fifty-three".