171421357 has 8 divisors (see below), whose sum is σ = 173400480. Its totient is φ = 169449840.

The previous prime is 171421337. The next prime is 171421379. The reversal of 171421357 is 753124171.

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 171421357 - 2¹¹ = 171419309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171421337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51918 + ... + 55120.

It is an arithmetic number, because the mean of its divisors is an integer number (21675060).

Almost surely, 2^171421357 is an apocalyptic number.

It is an amenable number.

171421357 is a deficient number, since it is larger than the sum of its proper divisors (1979123).

171421357 is a wasteful number, since it uses less digits than its factorization.

171421357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803.

The product of its digits is 5880, while the sum is 31.

The square root of 171421357 is about 13092.7979057190. The cubic root of 171421357 is about 555.5054314081.

The spelling of 171421357 in words is "one hundred seventy-one million, four hundred twenty-one thousand, three hundred fifty-seven".