171043961 has 4 divisors (see below), whose sum is σ = 186593424. Its totient is φ = 155494500.

The previous prime is 171043913. The next prime is 171043967. The reversal of 171043961 is 169340171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 171043961 - 2¹⁸ = 170781817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171043967) 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, 7774715 + ... + 7774736.

It is an arithmetic number, because the mean of its divisors is an integer number (46648356).

Almost surely, 2^171043961 is an apocalyptic number.

171043961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

171043961 is a deficient number, since it is larger than the sum of its proper divisors (15549463).

171043961 is a wasteful number, since it uses less digits than its factorization.

171043961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15549462.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 171043961 is about 13078.3776134504. The cubic root of 171043961 is about 555.0974706390.

The spelling of 171043961 in words is "one hundred seventy-one million, forty-three thousand, nine hundred sixty-one".