51327513 has 20 divisors (see below), whose sum is σ = 80011008. Its totient is φ = 32729400.

The previous prime is 51327511. The next prime is 51327527. The reversal of 51327513 is 31572315.

It is not a de Polignac number, because 51327513 - 2¹ = 51327511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51327511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11913 + ... + 15638.

Almost surely, 2^51327513 is an apocalyptic number.

It is an amenable number.

51327513 is a deficient number, since it is larger than the sum of its proper divisors (28683495).

51327513 is a wasteful number, since it uses less digits than its factorization.

51327513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27586 (or 27577 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 51327513 is about 7164.3222289342. The cubic root of 51327513 is about 371.6351130708.

Adding to 51327513 its reverse (31572315), we get a palindrome (82899828).

The spelling of 51327513 in words is "fifty-one million, three hundred twenty-seven thousand, five hundred thirteen".