51113611 has 8 divisors (see below), whose sum is σ = 54241920. Its totient is φ = 47998848.

The previous prime is 51113609. The next prime is 51113633. The reversal of 51113611 is 11631115.

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

It is a cyclic number.

It is not a de Polignac number, because 51113611 - 2¹ = 51113609 is a prime.

It is a super-2 number, since 2×51113611² = 5225202458918642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51113011) 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, 5005 + ... + 11281.

It is an arithmetic number, because the mean of its divisors is an integer number (6780240).

Almost surely, 2^51113611 is an apocalyptic number.

51113611 is a deficient number, since it is larger than the sum of its proper divisors (3128309).

51113611 is a wasteful number, since it uses less digits than its factorization.

51113611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6773.

The product of its digits is 90, while the sum is 19.

The square root of 51113611 is about 7149.3783645853. The cubic root of 51113611 is about 371.1181442134.

Adding to 51113611 its reverse (11631115), we get a palindrome (62744726).

The spelling of 51113611 in words is "fifty-one million, one hundred thirteen thousand, six hundred eleven".