51116601 has 4 divisors (see below), whose sum is σ = 68155472. Its totient is φ = 34077732.

The previous prime is 51116591. The next prime is 51116609. The reversal of 51116601 is 10661115.

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 not a de Polignac number, because 51116601 - 2¹⁰ = 51115577 is a prime.

It is a super-2 number, since 2×51116601² = 5225813795586402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51116609) 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, 8519431 + ... + 8519436.

It is an arithmetic number, because the mean of its divisors is an integer number (17038868).

Almost surely, 2^51116601 is an apocalyptic number.

It is an amenable number.

51116601 is a deficient number, since it is larger than the sum of its proper divisors (17038871).

51116601 is a wasteful number, since it uses less digits than its factorization.

51116601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17038870.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 51116601 is about 7149.5874706167. The cubic root of 51116601 is about 371.1253805222.

Adding to 51116601 its reverse (10661115), we get a palindrome (61777716).

The spelling of 51116601 in words is "fifty-one million, one hundred sixteen thousand, six hundred one".