50739881 has 2 divisors, whose sum is σ = 50739882. Its totient is φ = 50739880.

The previous prime is 50739869. The next prime is 50739907. The reversal of 50739881 is 18893705.

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., 36421225 + 14318656 = 6035^2 + 3784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50739881 is a prime.

It is a super-2 number, since 2×50739881² = 5149071047788322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50739841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25369940 + 25369941.

It is an arithmetic number, because the mean of its divisors is an integer number (25369941).

Almost surely, 2^50739881 is an apocalyptic number.

It is an amenable number.

50739881 is a deficient number, since it is larger than the sum of its proper divisors (1).

50739881 is an equidigital number, since it uses as much as digits as its factorization.

50739881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 50739881 is about 7123.1931744127. The cubic root of 50739881 is about 370.2114228730.

The spelling of 50739881 in words is "fifty million, seven hundred thirty-nine thousand, eight hundred eighty-one".