1020166055 has 8 divisors (see below), whose sum is σ = 1227254544. Its totient is φ = 814096000.

The previous prime is 1020166051. The next prime is 1020166097. The reversal of 1020166055 is 5506610201.

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

It is not a de Polignac number, because 1020166055 - 2² = 1020166051 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 (1020166051) 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, 252401 + ... + 256410.

It is an arithmetic number, because the mean of its divisors is an integer number (153406818).

Almost surely, 2^1020166055 is an apocalyptic number.

1020166055 is a deficient number, since it is larger than the sum of its proper divisors (207088489).

1020166055 is an equidigital number, since it uses as much as digits as its factorization.

1020166055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509217.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1020166055 is about 31940.0384314108. The cubic root of 1020166055 is about 1006.6773323261.

Adding to 1020166055 its reverse (5506610201), we get a palindrome (6526776256).

The spelling of 1020166055 in words is "one billion, twenty million, one hundred sixty-six thousand, fifty-five".