50550778 has 4 divisors (see below), whose sum is σ = 75826170. Its totient is φ = 25275388.

The previous prime is 50550751. The next prime is 50550779. The reversal of 50550778 is 87705505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87705505 = 5 ⋅17541101.

It can be written as a sum of positive squares in only one way, i.e., 34845409 + 15705369 = 5903^2 + 3963^2 .

It is not an unprimeable number, because it can be changed into a prime (50550779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637693 + ... + 12637696.

Almost surely, 2^50550778 is an apocalyptic number.

50550778 is a deficient number, since it is larger than the sum of its proper divisors (25275392).

50550778 is a wasteful number, since it uses less digits than its factorization.

50550778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25275391.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 50550778 is about 7109.9070317410. The cubic root of 50550778 is about 369.7509353752.

The spelling of 50550778 in words is "fifty million, five hundred fifty thousand, seven hundred seventy-eight".