51013511 has 8 divisors (see below), whose sum is σ = 51652944. Its totient is φ = 50377600.

The previous prime is 51013493. The next prime is 51013513. The reversal of 51013511 is 11531015.

51013511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51013511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51013511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51013513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38561 + ... + 39861.

It is an arithmetic number, because the mean of its divisors is an integer number (6456618).

Almost surely, 2^51013511 is an apocalyptic number.

51013511 is a deficient number, since it is larger than the sum of its proper divisors (639433).

51013511 is a wasteful number, since it uses less digits than its factorization.

51013511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 51013511 is about 7142.3743251107. The cubic root of 51013511 is about 370.8757221362.

Adding to 51013511 its reverse (11531015), we get a palindrome (62544526).

The spelling of 51013511 in words is "fifty-one million, thirteen thousand, five hundred eleven".