50491801 has 2 divisors, whose sum is σ = 50491802. Its totient is φ = 50491800.

The previous prime is 50491789. The next prime is 50491829. The reversal of 50491801 is 10819405.

It is a happy number.

It is an a-pointer prime, because the next prime (50491829) can be obtained adding 50491801 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50424201 + 67600 = 7101^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 50491801 - 2⁵ = 50491769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50491801.

It is not a weakly prime, because it can be changed into another prime (50491841) 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, 25245900 + 25245901.

It is an arithmetic number, because the mean of its divisors is an integer number (25245901).

Almost surely, 2^50491801 is an apocalyptic number.

It is an amenable number.

50491801 is a deficient number, since it is larger than the sum of its proper divisors (1).

50491801 is an equidigital number, since it uses as much as digits as its factorization.

50491801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 50491801 is about 7105.7582987321. The cubic root of 50491801 is about 369.6070847241.

The spelling of 50491801 in words is "fifty million, four hundred ninety-one thousand, eight hundred one".