51503535113 has 4 divisors (see below), whose sum is σ = 52228937088. Its totient is φ = 50778133140.

The previous prime is 51503535079. The next prime is 51503535119. The reversal of 51503535113 is 31153530515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51503535113 - 2¹² = 51503531017 is a prime.

It is a super-2 number, since 2×51503535113² (a number of 22 digits) contains 22 as substring.

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 51503535113.

It is not an unprimeable number, because it can be changed into a prime (51503535119) 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, 362700881 + ... + 362701022.

It is an arithmetic number, because the mean of its divisors is an integer number (13057234272).

Almost surely, 2^51503535113 is an apocalyptic number.

It is an amenable number.

51503535113 is a deficient number, since it is larger than the sum of its proper divisors (725401975).

51503535113 is an equidigital number, since it uses as much as digits as its factorization.

51503535113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725401974.

The product of its (nonzero) digits is 16875, while the sum is 32.

The spelling of 51503535113 in words is "fifty-one billion, five hundred three million, five hundred thirty-five thousand, one hundred thirteen".