51135343 has 4 divisors (see below), whose sum is σ = 58440400. Its totient is φ = 43830288.

The previous prime is 51135319. The next prime is 51135347. The reversal of 51135343 is 34353115.

51135343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51135343 - 2⁵ = 51135311 is a prime.

It is a super-2 number, since 2×51135343² = 5229646607455298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51135347) 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 3 ways as a sum of consecutive naturals, for example, 3652518 + ... + 3652531.

It is an arithmetic number, because the mean of its divisors is an integer number (14610100).

Almost surely, 2^51135343 is an apocalyptic number.

51135343 is a deficient number, since it is larger than the sum of its proper divisors (7305057).

51135343 is an equidigital number, since it uses as much as digits as its factorization.

51135343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7305056.

The product of its digits is 2700, while the sum is 25.

The square root of 51135343 is about 7150.8980554893. The cubic root of 51135343 is about 371.1707329245.

Adding to 51135343 its reverse (34353115), we get a palindrome (85488458).

The spelling of 51135343 in words is "fifty-one million, one hundred thirty-five thousand, three hundred forty-three".