51118723 has 2 divisors, whose sum is σ = 51118724. Its totient is φ = 51118722.

The previous prime is 51118703. The next prime is 51118733. The reversal of 51118723 is 32781115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51118723 - 2⁹ = 51118211 is a prime.

It is a super-2 number, since 2×51118723² = 5226247682301458, which contains 22 as substring.

It is equal to p_3064159 and since 51118723 and 3064159 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 51118691 and 51118700.

It is not a weakly prime, because it can be changed into another prime (51118703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25559361 + 25559362.

It is an arithmetic number, because the mean of its divisors is an integer number (25559362).

Almost surely, 2^51118723 is an apocalyptic number.

51118723 is a deficient number, since it is larger than the sum of its proper divisors (1).

51118723 is an equidigital number, since it uses as much as digits as its factorization.

51118723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 28.

The square root of 51118723 is about 7149.7358692472. The cubic root of 51118723 is about 371.1305159521.

Adding to 51118723 its reverse (32781115), we get a palindrome (83899838).

The spelling of 51118723 in words is "fifty-one million, one hundred eighteen thousand, seven hundred twenty-three".