50142649 has 2 divisors, whose sum is σ = 50142650. Its totient is φ = 50142648.

The previous prime is 50142647. The next prime is 50142667. The reversal of 50142649 is 94624105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 20766249 = 5420^2 + 4557^2 .

It is a cyclic number.

It is not a de Polignac number, because 50142649 - 2¹ = 50142647 is a prime.

Together with 50142647, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 50142649.

It is not a weakly prime, because it can be changed into another prime (50142641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25071324 + 25071325.

It is an arithmetic number, because the mean of its divisors is an integer number (25071325).

Almost surely, 2^50142649 is an apocalyptic number.

It is an amenable number.

50142649 is a deficient number, since it is larger than the sum of its proper divisors (1).

50142649 is an equidigital number, since it uses as much as digits as its factorization.

50142649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 50142649 is about 7081.1474352678. The cubic root of 50142649 is about 368.7531661511.

The spelling of 50142649 in words is "fifty million, one hundred forty-two thousand, six hundred forty-nine".