166551083 has 4 divisors (see below), whose sum is σ = 170424408. Its totient is φ = 162677760.

The previous prime is 166551071. The next prime is 166551101. The reversal of 166551083 is 380155661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 380155661 = 23 ⋅16528507.

It is a cyclic number.

It is not a de Polignac number, because 166551083 - 2⁴ = 166551067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166551053) 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 3 ways as a sum of consecutive naturals, for example, 1936598 + ... + 1936683.

It is an arithmetic number, because the mean of its divisors is an integer number (42606102).

Almost surely, 2^166551083 is an apocalyptic number.

166551083 is a deficient number, since it is larger than the sum of its proper divisors (3873325).

166551083 is an equidigital number, since it uses as much as digits as its factorization.

166551083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873324.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 166551083 is about 12905.4671748062. The cubic root of 166551083 is about 550.1939624434.

The spelling of 166551083 in words is "one hundred sixty-six million, five hundred fifty-one thousand, eighty-three".