2051544013 has 8 divisors (see below), whose sum is σ = 2133065880. Its totient is φ = 1970740800.

The previous prime is 2051544007. The next prime is 2051544023. The reversal of 2051544013 is 3104451502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 916999524 + 1134544489 = 30282^2 + 33683^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2051544013 - 2²⁵ = 2017989581 is a prime.

It is a super-2 number, since 2×2051544013² = 8417665674552288338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051544023) 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, 173838 + ... + 185263.

It is an arithmetic number, because the mean of its divisors is an integer number (266633235).

Almost surely, 2^2051544013 is an apocalyptic number.

It is an amenable number.

2051544013 is a deficient number, since it is larger than the sum of its proper divisors (81521867).

2051544013 is a wasteful number, since it uses less digits than its factorization.

2051544013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359327.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2051544013 is about 45293.9732525200. The cubic root of 2051544013 is about 1270.6529415740.

Adding to 2051544013 its reverse (3104451502), we get a palindrome (5155995515).

The spelling of 2051544013 in words is "two billion, fifty-one million, five hundred forty-four thousand, thirteen".