50261389 has 2 divisors, whose sum is σ = 50261390. Its totient is φ = 50261388.

The previous prime is 50261363. The next prime is 50261483. The reversal of 50261389 is 98316205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41705764 + 8555625 = 6458^2 + 2925^2 .

It is a cyclic number.

It is not a de Polignac number, because 50261389 - 2⁹ = 50260877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50261329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25130694 + 25130695.

It is an arithmetic number, because the mean of its divisors is an integer number (25130695).

Almost surely, 2^50261389 is an apocalyptic number.

It is an amenable number.

50261389 is a deficient number, since it is larger than the sum of its proper divisors (1).

50261389 is an equidigital number, since it uses as much as digits as its factorization.

50261389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 50261389 is about 7089.5267119886. The cubic root of 50261389 is about 369.0440112702.

The spelling of 50261389 in words is "fifty million, two hundred sixty-one thousand, three hundred eighty-nine".