29955171 has 4 divisors (see below), whose sum is σ = 39940232. Its totient is φ = 19970112.

The previous prime is 29955161. The next prime is 29955193. The reversal of 29955171 is 17155992.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 29955171 - 2¹⁰ = 29954147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29955161) 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 3 ways as a sum of consecutive naturals, for example, 4992526 + ... + 4992531.

It is an arithmetic number, because the mean of its divisors is an integer number (9985058).

Almost surely, 2^29955171 is an apocalyptic number.

29955171 is a deficient number, since it is larger than the sum of its proper divisors (9985061).

29955171 is an equidigital number, since it uses as much as digits as its factorization.

29955171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9985060.

The product of its digits is 28350, while the sum is 39.

The square root of 29955171 is about 5473.1317360356. The cubic root of 29955171 is about 310.5684021886.

The spelling of 29955171 in words is "twenty-nine million, nine hundred fifty-five thousand, one hundred seventy-one".