50388421 has 2 divisors, whose sum is σ = 50388422. Its totient is φ = 50388420.

The previous prime is 50388397. The next prime is 50388449. The reversal of 50388421 is 12488305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46444225 + 3944196 = 6815^2 + 1986^2 .

It is a cyclic number.

It is not a de Polignac number, because 50388421 - 2⁷ = 50388293 is a prime.

It is equal to p_3022996 and since 50388421 and 3022996 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53388421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25194210 + 25194211.

It is an arithmetic number, because the mean of its divisors is an integer number (25194211).

Almost surely, 2^50388421 is an apocalyptic number.

It is an amenable number.

50388421 is a deficient number, since it is larger than the sum of its proper divisors (1).

50388421 is an equidigital number, since it uses as much as digits as its factorization.

50388421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 50388421 is about 7098.4801894490. The cubic root of 50388421 is about 369.3546603226.

The spelling of 50388421 in words is "fifty million, three hundred eighty-eight thousand, four hundred twenty-one".