172204546 has 8 divisors (see below), whose sum is σ = 259800444. Its totient is φ = 85604400.

The previous prime is 172204541. The next prime is 172204553. The reversal of 172204546 is 645402271.

It can be written as a sum of positive squares in 2 ways, for example, as 117961321 + 54243225 = 10861^2 + 7365^2 .

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

It is a super-2 number, since 2×172204546² = 59308811326132232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172204541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248505 + ... + 249196.

Almost surely, 2^172204546 is an apocalyptic number.

172204546 is a deficient number, since it is larger than the sum of its proper divisors (87595898).

172204546 is a wasteful number, since it uses less digits than its factorization.

172204546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497876.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 172204546 is about 13122.6729746649. The cubic root of 172204546 is about 556.3501430439.

The spelling of 172204546 in words is "one hundred seventy-two million, two hundred four thousand, five hundred forty-six".