2800561055 has 4 divisors (see below), whose sum is σ = 3360673272. Its totient is φ = 2240448840.

The previous prime is 2800561051. The next prime is 2800561063. The reversal of 2800561055 is 5501650082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5501650082 = 2 ⋅2750825041.

It is not a de Polignac number, because 2800561055 - 2² = 2800561051 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 (2800561051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280056101 + ... + 280056110.

It is an arithmetic number, because the mean of its divisors is an integer number (840168318).

Almost surely, 2^2800561055 is an apocalyptic number.

2800561055 is a deficient number, since it is larger than the sum of its proper divisors (560112217).

2800561055 is an equidigital number, since it uses as much as digits as its factorization.

2800561055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560112216.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 2800561055 is about 52920.3274271806. The cubic root of 2800561055 is about 1409.5538811303.

The spelling of 2800561055 in words is "two billion, eight hundred million, five hundred sixty-one thousand, fifty-five".