172677401 has 4 divisors (see below), whose sum is σ = 185960292. Its totient is φ = 159394512.

The previous prime is 172677391. The next prime is 172677419. The reversal of 172677401 is 104776271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104776271 = 59 ⋅1775869.

It can be written as a sum of positive squares in 2 ways, for example, as 90231001 + 82446400 = 9499^2 + 9080^2 .

It is a cyclic number.

It is not a de Polignac number, because 172677401 - 2¹⁰ = 172676377 is a prime.

It is a super-2 number, since 2×172677401² = 59634969632229602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172677431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6641426 + ... + 6641451.

It is an arithmetic number, because the mean of its divisors is an integer number (46490073).

Almost surely, 2^172677401 is an apocalyptic number.

It is an amenable number.

172677401 is a deficient number, since it is larger than the sum of its proper divisors (13282891).

172677401 is a wasteful number, since it uses less digits than its factorization.

172677401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13282890.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 172677401 is about 13140.6773417507. The cubic root of 172677401 is about 556.8589033713.

The spelling of 172677401 in words is "one hundred seventy-two million, six hundred seventy-seven thousand, four hundred one".