171424561 has 8 divisors (see below), whose sum is σ = 213724224. Its totient is φ = 133577520.

The previous prime is 171424537. The next prime is 171424571. The reversal of 171424561 is 165424171.

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 171424561 - 2⁵ = 171424529 is a prime.

It is a super-2 number, since 2×171424561² = 58772760228085442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (171424501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113070 + ... + 1113223.

It is an arithmetic number, because the mean of its divisors is an integer number (26715528).

Almost surely, 2^171424561 is an apocalyptic number.

171424561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

171424561 is a deficient number, since it is larger than the sum of its proper divisors (42299663).

171424561 is a wasteful number, since it uses less digits than its factorization.

171424561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226311.

The product of its digits is 6720, while the sum is 31.

The square root of 171424561 is about 13092.9202624930. The cubic root of 171424561 is about 555.5088923311.

The spelling of 171424561 in words is "one hundred seventy-one million, four hundred twenty-four thousand, five hundred sixty-one".