50491549 has 2 divisors, whose sum is σ = 50491550. Its totient is φ = 50491548.

The previous prime is 50491543. The next prime is 50491577. The reversal of 50491549 is 94519405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35784324 + 14707225 = 5982^2 + 3835^2 .

It is a cyclic number.

It is not a de Polignac number, because 50491549 - 2¹³ = 50483357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50491543) 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, 25245774 + 25245775.

It is an arithmetic number, because the mean of its divisors is an integer number (25245775).

Almost surely, 2^50491549 is an apocalyptic number.

It is an amenable number.

50491549 is a deficient number, since it is larger than the sum of its proper divisors (1).

50491549 is an equidigital number, since it uses as much as digits as its factorization.

50491549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 50491549 is about 7105.7405666123. The cubic root of 50491549 is about 369.6064698312.

It can be divided in two parts, 50491 and 549, that added together give a triangular number (51040 = T₃₁₉).

The spelling of 50491549 in words is "fifty million, four hundred ninety-one thousand, five hundred forty-nine".