172761297 has 8 divisors (see below), whose sum is σ = 231135744. Its totient is φ = 114780528.

The previous prime is 172761287. The next prime is 172761341. The reversal of 172761297 is 792167271.

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

It is not a de Polignac number, because 172761297 - 2¹⁵ = 172728529 is a prime.

It is a super-2 number, since 2×172761297² = 59692931482244418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172761227) 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, 97393 + ... + 99150.

It is an arithmetic number, because the mean of its divisors is an integer number (28891968).

Almost surely, 2^172761297 is an apocalyptic number.

It is an amenable number.

172761297 is a deficient number, since it is larger than the sum of its proper divisors (58374447).

172761297 is a wasteful number, since it uses less digits than its factorization.

172761297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196839.

The product of its digits is 74088, while the sum is 42.

The square root of 172761297 is about 13143.8691792029. The cubic root of 172761297 is about 556.9490728052.

The spelling of 172761297 in words is "one hundred seventy-two million, seven hundred sixty-one thousand, two hundred ninety-seven".