50724781 has 2 divisors, whose sum is σ = 50724782. Its totient is φ = 50724780.

The previous prime is 50724769. The next prime is 50724823. The reversal of 50724781 is 18742705.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36542025 + 14182756 = 6045^2 + 3766^2 .

It is a cyclic number.

It is not a de Polignac number, because 50724781 - 2¹¹ = 50722733 is a prime.

It is a super-2 number, since 2×50724781² = 5146006814995922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50724761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25362390 + 25362391.

It is an arithmetic number, because the mean of its divisors is an integer number (25362391).

Almost surely, 2^50724781 is an apocalyptic number.

It is an amenable number.

50724781 is a deficient number, since it is larger than the sum of its proper divisors (1).

50724781 is an equidigital number, since it uses as much as digits as its factorization.

50724781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 50724781 is about 7122.1331776372. The cubic root of 50724781 is about 370.1746947149.

The spelling of 50724781 in words is "fifty million, seven hundred twenty-four thousand, seven hundred eighty-one".