2653221053 has 4 divisors (see below), whose sum is σ = 3032252640. Its totient is φ = 2274189468.

The previous prime is 2653221023. The next prime is 2653221061. The reversal of 2653221053 is 3501223562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2653221053 - 2¹⁸ = 2652958909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653221013) 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, 189515783 + ... + 189515796.

It is an arithmetic number, because the mean of its divisors is an integer number (758063160).

Almost surely, 2^2653221053 is an apocalyptic number.

It is an amenable number.

2653221053 is a deficient number, since it is larger than the sum of its proper divisors (379031587).

2653221053 is an equidigital number, since it uses as much as digits as its factorization.

2653221053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379031586.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 2653221053 is about 51509.4268362598. The cubic root of 2653221053 is about 1384.3879535791.

The spelling of 2653221053 in words is "two billion, six hundred fifty-three million, two hundred twenty-one thousand, fifty-three".