50490778 has 12 divisors (see below), whose sum is σ = 82010718. Its totient is φ = 23303280.

The previous prime is 50490763. The next prime is 50490793. The reversal of 50490778 is 87709405.

It is an interprime number because it is at equal distance from previous prime (50490763) and next prime (50490793).

It can be written as a sum of positive squares in 3 ways, for example, as 39778249 + 10712529 = 6307^2 + 3273^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 50490778.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74353 + ... + 75028.

Almost surely, 2^50490778 is an apocalyptic number.

50490778 is a deficient number, since it is larger than the sum of its proper divisors (31519940).

50490778 is a wasteful number, since it uses less digits than its factorization.

50490778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149409 (or 149396 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 50490778 is about 7105.6863144949. The cubic root of 50490778 is about 369.6045885393.

The spelling of 50490778 in words is "fifty million, four hundred ninety thousand, seven hundred seventy-eight".