168852021 has 8 divisors (see below), whose sum is σ = 242454240. Its totient is φ = 103908912.

The previous prime is 168852017. The next prime is 168852023. The reversal of 168852021 is 120258861.

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

It is not a de Polignac number, because 168852021 - 2² = 168852017 is a prime.

It is a super-2 number, since 2×168852021² = 57022009991568882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168852023) 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, 2164731 + ... + 2164808.

It is an arithmetic number, because the mean of its divisors is an integer number (30306780).

Almost surely, 2^168852021 is an apocalyptic number.

It is an amenable number.

168852021 is a deficient number, since it is larger than the sum of its proper divisors (73602219).

168852021 is a wasteful number, since it uses less digits than its factorization.

168852021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329555.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 168852021 is about 12994.3072535630. The cubic root of 168852021 is about 552.7160649030.

The spelling of 168852021 in words is "one hundred sixty-eight million, eight hundred fifty-two thousand, twenty-one".