51350013 has 48 divisors (see below), whose sum is σ = 92304576. Its totient is φ = 27025920.

The previous prime is 51350003. The next prime is 51350017. The reversal of 51350013 is 31005315.

It is a happy number.

It is not a de Polignac number, because 51350013 - 2⁸ = 51349757 is a prime.

It is a super-3 number, since 3×51350013³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51350017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20706 + ... + 23052.

It is an arithmetic number, because the mean of its divisors is an integer number (1923012).

Almost surely, 2^51350013 is an apocalyptic number.

It is an amenable number.

51350013 is a deficient number, since it is larger than the sum of its proper divisors (40954563).

51350013 is a wasteful number, since it uses less digits than its factorization.

51350013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 51350013 is about 7165.8923380135. The cubic root of 51350013 is about 371.6894086330.

Adding to 51350013 its reverse (31005315), we get a palindrome (82355328).

The spelling of 51350013 in words is "fifty-one million, three hundred fifty thousand, thirteen".