172054611 has 20 divisors (see below), whose sum is σ = 259576944. Its totient is φ = 113562000.

The previous prime is 172054579. The next prime is 172054613. The reversal of 172054611 is 116450271.

It is a happy number.

It is not a de Polignac number, because 172054611 - 2⁵ = 172054579 is a prime.

It is a super-2 number, since 2×172054611² = 59205578332722642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (172054613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2335 + ... + 18696.

Almost surely, 2^172054611 is an apocalyptic number.

172054611 is a deficient number, since it is larger than the sum of its proper divisors (87522333).

172054611 is a wasteful number, since it uses less digits than its factorization.

172054611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21144 (or 21135 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 172054611 is about 13116.9589082226. The cubic root of 172054611 is about 556.1886285698.

The spelling of 172054611 in words is "one hundred seventy-two million, fifty-four thousand, six hundred eleven".