172551941 has 8 divisors (see below), whose sum is σ = 176019480. Its totient is φ = 169092352.

The previous prime is 172551919. The next prime is 172551961. The reversal of 172551941 is 149155271.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 90649441 + 81902500 = 9521^2 + 9050^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 172551941 - 2²⁶ = 105443077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172551961) 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 7 ways as a sum of consecutive naturals, for example, 61865 + ... + 64593.

It is an arithmetic number, because the mean of its divisors is an integer number (22002435).

Almost surely, 2^172551941 is an apocalyptic number.

It is an amenable number.

172551941 is a deficient number, since it is larger than the sum of its proper divisors (3467539).

172551941 is a wasteful number, since it uses less digits than its factorization.

172551941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975.

The product of its digits is 12600, while the sum is 35.

The square root of 172551941 is about 13135.9027478130. The cubic root of 172551941 is about 556.7240074239.

The spelling of 172551941 in words is "one hundred seventy-two million, five hundred fifty-one thousand, nine hundred forty-one".