2054172013 has 4 divisors (see below), whose sum is σ = 2054276028. Its totient is φ = 2054068000.

The previous prime is 2054171981. The next prime is 2054172053. The reversal of 2054172013 is 3102714502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1451076649 + 603095364 = 38093^2 + 24558^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054172013 - 2⁵ = 2054171981 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 (2054172053) 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, 12256 + ... + 65257.

It is an arithmetic number, because the mean of its divisors is an integer number (513569007).

Almost surely, 2^2054172013 is an apocalyptic number.

It is an amenable number.

2054172013 is a deficient number, since it is larger than the sum of its proper divisors (104015).

2054172013 is an equidigital number, since it uses as much as digits as its factorization.

2054172013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104014.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2054172013 is about 45322.9744500513. The cubic root of 2054172013 is about 1271.1952731167.

Adding to 2054172013 its reverse (3102714502), we get a palindrome (5156886515).

The spelling of 2054172013 in words is "two billion, fifty-four million, one hundred seventy-two thousand, thirteen".