50666149 has 4 divisors (see below), whose sum is σ = 51114636. Its totient is φ = 50217664.

The previous prime is 50666131. The next prime is 50666197. The reversal of 50666149 is 94166605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 864900 + 49801249 = 930^2 + 7057^2 .

It is a cyclic number.

It is not a de Polignac number, because 50666149 - 2⁵ = 50666117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50666449) 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 in 3 ways as a sum of consecutive naturals, for example, 224074 + ... + 224299.

It is an arithmetic number, because the mean of its divisors is an integer number (12778659).

Almost surely, 2^50666149 is an apocalyptic number.

It is an amenable number.

50666149 is a deficient number, since it is larger than the sum of its proper divisors (448487).

50666149 is a wasteful number, since it uses less digits than its factorization.

50666149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448486.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 50666149 is about 7118.0158049839. The cubic root of 50666149 is about 370.0320133002.

The spelling of 50666149 in words is "fifty million, six hundred sixty-six thousand, one hundred forty-nine".