165552213 has 8 divisors (see below), whose sum is σ = 228348000. Its totient is φ = 106562288.

The previous prime is 165552199. The next prime is 165552227. The reversal of 165552213 is 312255561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (165552199) and next prime (165552227).

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 165552213 - 2⁸ = 165551957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165552253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951363 + ... + 951536.

It is an arithmetic number, because the mean of its divisors is an integer number (28543500).

Almost surely, 2^165552213 is an apocalyptic number.

It is an amenable number.

165552213 is a deficient number, since it is larger than the sum of its proper divisors (62795787).

165552213 is a wasteful number, since it uses less digits than its factorization.

165552213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902931.

The product of its digits is 9000, while the sum is 30.

The square root of 165552213 is about 12866.7094861118. The cubic root of 165552213 is about 549.0918489595.

The spelling of 165552213 in words is "one hundred sixty-five million, five hundred fifty-two thousand, two hundred thirteen".