51260613 has 8 divisors (see below), whose sum is σ = 71944800. Its totient is φ = 32375088.

The previous prime is 51260591. The next prime is 51260621. The reversal of 51260613 is 31606215.

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

It is not a de Polignac number, because 51260613 - 2⁹ = 51260101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51260633) 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, 449598 + ... + 449711.

It is an arithmetic number, because the mean of its divisors is an integer number (8993100).

Almost surely, 2^51260613 is an apocalyptic number.

It is an amenable number.

51260613 is a deficient number, since it is larger than the sum of its proper divisors (20684187).

51260613 is a wasteful number, since it uses less digits than its factorization.

51260613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899331.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51260613 is about 7159.6517373403. The cubic root of 51260613 is about 371.4735804783.

Adding to 51260613 its reverse (31606215), we get a palindrome (82866828).

The spelling of 51260613 in words is "fifty-one million, two hundred sixty thousand, six hundred thirteen".