50218393 has 2 divisors, whose sum is σ = 50218394. Its totient is φ = 50218392.

The previous prime is 50218373. The next prime is 50218411. The reversal of 50218393 is 39381205.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50013184 + 205209 = 7072^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 50218393 - 2¹³ = 50210201 is a prime.

It is a super-3 number, since 3×50218393³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (50218373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25109196 + 25109197.

It is an arithmetic number, because the mean of its divisors is an integer number (25109197).

Almost surely, 2^50218393 is an apocalyptic number.

It is an amenable number.

50218393 is a deficient number, since it is larger than the sum of its proper divisors (1).

50218393 is an equidigital number, since it uses as much as digits as its factorization.

50218393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 50218393 is about 7086.4937028124. The cubic root of 50218393 is about 368.9387486066.

Adding to 50218393 its reverse (39381205), we get a palindrome (89599598).

The spelling of 50218393 in words is "fifty million, two hundred eighteen thousand, three hundred ninety-three".