50471389 has 2 divisors, whose sum is σ = 50471390. Its totient is φ = 50471388.

The previous prime is 50471359. The next prime is 50471413. The reversal of 50471389 is 98317405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50168889 + 302500 = 7083^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 50471389 - 2¹³ = 50463197 is a prime.

It is a super-2 number, since 2×50471389² = 5094722215178642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50471329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25235694 + 25235695.

It is an arithmetic number, because the mean of its divisors is an integer number (25235695).

Almost surely, 2^50471389 is an apocalyptic number.

It is an amenable number.

50471389 is a deficient number, since it is larger than the sum of its proper divisors (1).

50471389 is an equidigital number, since it uses as much as digits as its factorization.

50471389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 50471389 is about 7104.3218536325. The cubic root of 50471389 is about 369.5572717740.

The spelling of 50471389 in words is "fifty million, four hundred seventy-one thousand, three hundred eighty-nine".