49978017 has 6 divisors (see below), whose sum is σ = 72190482. Its totient is φ = 33318672.

The previous prime is 49978013. The next prime is 49978031. The reversal of 49978017 is 71087994.

It can be written as a sum of positive squares in only one way, i.e., 48986001 + 992016 = 6999^2 + 996^2 .

It is not a de Polignac number, because 49978017 - 2² = 49978013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49978013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2776548 + ... + 2776565.

It is an arithmetic number, because the mean of its divisors is an integer number (12031747).

Almost surely, 2^49978017 is an apocalyptic number.

It is an amenable number.

49978017 is a deficient number, since it is larger than the sum of its proper divisors (22212465).

49978017 is a wasteful number, since it uses less digits than its factorization.

49978017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553119 (or 5553116 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 49978017 is about 7069.5132081353. The cubic root of 49978017 is about 368.3491512400.

The spelling of 49978017 in words is "forty-nine million, nine hundred seventy-eight thousand, seventeen".