51113361 has 8 divisors (see below), whose sum is σ = 73393600. Its totient is φ = 31454352.

The previous prime is 51113357. The next prime is 51113371. The reversal of 51113361 is 16331115.

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

It is not a de Polignac number, because 51113361 - 2² = 51113357 is a prime.

It is a super-2 number, since 2×51113361² = 5225151345432642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51113311) 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, 655261 + ... + 655338.

It is an arithmetic number, because the mean of its divisors is an integer number (9174200).

Almost surely, 2^51113361 is an apocalyptic number.

It is an amenable number.

51113361 is a deficient number, since it is larger than the sum of its proper divisors (22280239).

51113361 is a wasteful number, since it uses less digits than its factorization.

51113361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310615.

The product of its digits is 270, while the sum is 21.

The square root of 51113361 is about 7149.3608805263. The cubic root of 51113361 is about 371.1175391581.

Adding to 51113361 its reverse (16331115), we get a palindrome (67444476).

The spelling of 51113361 in words is "fifty-one million, one hundred thirteen thousand, three hundred sixty-one".