2155061802 has 24 divisors (see below), whose sum is σ = 4381985088. Its totient is φ = 706570320.

The previous prime is 2155061773. The next prime is 2155061807. The reversal of 2155061802 is 2081605512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155061802.

It is not an unprimeable number, because it can be changed into a prime (2155061807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25938 + ... + 70589.

It is an arithmetic number, because the mean of its divisors is an integer number (182582712).

Almost surely, 2^2155061802 is an apocalyptic number.

2155061802 is an abundant number, since it is smaller than the sum of its proper divisors (2226923286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155061802 is an equidigital number, since it uses as much as digits as its factorization.

2155061802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96654 (or 96593 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 2155061802 is about 46422.6432035058. The cubic root of 2155061802 is about 1291.6749674407.

The spelling of 2155061802 in words is "two billion, one hundred fifty-five million, sixty-one thousand, eight hundred two".