51336113 has 4 divisors (see below), whose sum is σ = 51406320. Its totient is φ = 51265908.

The previous prime is 51336083. The next prime is 51336121. The reversal of 51336113 is 31163315.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31163315 = 5 ⋅6232663.

It is not a de Polignac number, because 51336113 - 2⁶ = 51336049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51336163) 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, 33995 + ... + 35472.

It is an arithmetic number, because the mean of its divisors is an integer number (12851580).

Almost surely, 2^51336113 is an apocalyptic number.

It is an amenable number.

51336113 is a deficient number, since it is larger than the sum of its proper divisors (70207).

51336113 is an equidigital number, since it uses as much as digits as its factorization.

51336113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70206.

The product of its digits is 810, while the sum is 23.

The square root of 51336113 is about 7164.9224001381. The cubic root of 51336113 is about 371.6558679143.

Adding to 51336113 its reverse (31163315), we get a palindrome (82499428).

The spelling of 51336113 in words is "fifty-one million, three hundred thirty-six thousand, one hundred thirteen".