50061989 has 2 divisors, whose sum is σ = 50061990. Its totient is φ = 50061988.

The previous prime is 50061971. The next prime is 50062057. The reversal of 50061989 is 98916005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48580900 + 1481089 = 6970^2 + 1217^2 .

It is a cyclic number.

It is not a de Polignac number, because 50061989 - 2¹² = 50057893 is a prime.

It is a super-2 number, since 2×50061989² = 5012405485272242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50061959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25030994 + 25030995.

It is an arithmetic number, because the mean of its divisors is an integer number (25030995).

Almost surely, 2^50061989 is an apocalyptic number.

It is an amenable number.

50061989 is a deficient number, since it is larger than the sum of its proper divisors (1).

50061989 is an equidigital number, since it uses as much as digits as its factorization.

50061989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 50061989 is about 7075.4497383559. The cubic root of 50061989 is about 368.5553332758. Note that the first 3 decimals are identical.

The spelling of 50061989 in words is "fifty million, sixty-one thousand, nine hundred eighty-nine".