51618011 has 2 divisors, whose sum is σ = 51618012. Its totient is φ = 51618010.

The previous prime is 51617983. The next prime is 51618019. The reversal of 51618011 is 11081615.

It is a happy number.

51618011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51618011 - 2⁶ = 51617947 is a prime.

It is a super-2 number, since 2×51618011² = 5328838119192242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51618019) 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 as a sum of consecutive naturals, namely, 25809005 + 25809006.

It is an arithmetic number, because the mean of its divisors is an integer number (25809006).

Almost surely, 2^51618011 is an apocalyptic number.

51618011 is a deficient number, since it is larger than the sum of its proper divisors (1).

51618011 is an equidigital number, since it uses as much as digits as its factorization.

51618011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 51618011 is about 7184.5675583155. The cubic root of 51618011 is about 372.3349081493.

Adding to 51618011 its reverse (11081615), we get a palindrome (62699626).

The spelling of 51618011 in words is "fifty-one million, six hundred eighteen thousand, eleven".