165551350 has 12 divisors (see below), whose sum is σ = 307925604. Its totient is φ = 66220520.

The previous prime is 165551299. The next prime is 165551387. The reversal of 165551350 is 53155561.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1655464 + ... + 1655563.

It is an arithmetic number, because the mean of its divisors is an integer number (25660467).

Almost surely, 2^165551350 is an apocalyptic number.

165551350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165551350 is a deficient number, since it is larger than the sum of its proper divisors (142374254).

165551350 is a wasteful number, since it uses less digits than its factorization.

165551350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311039 (or 3311034 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 165551350 is about 12866.6759499103. The cubic root of 165551350 is about 549.0908948455.

The spelling of 165551350 in words is "one hundred sixty-five million, five hundred fifty-one thousand, three hundred fifty".