52051613 has 4 divisors (see below), whose sum is σ = 52078620. Its totient is φ = 52024608.

The previous prime is 52051579. The next prime is 52051619. The reversal of 52051613 is 31615025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41306329 + 10745284 = 6427^2 + 3278^2 .

It is a cyclic number.

It is not a de Polignac number, because 52051613 - 2⁸ = 52051357 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 (52051619) 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, 10370 + ... + 14547.

It is an arithmetic number, because the mean of its divisors is an integer number (13019655).

Almost surely, 2^52051613 is an apocalyptic number.

It is an amenable number.

52051613 is a deficient number, since it is larger than the sum of its proper divisors (27007).

52051613 is a wasteful number, since it uses less digits than its factorization.

52051613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27006.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 52051613 is about 7214.6803810009. The cubic root of 52051613 is about 373.3745659356.

Adding to 52051613 its reverse (31615025), we get a palindrome (83666638).

The spelling of 52051613 in words is "fifty-two million, fifty-one thousand, six hundred thirteen".