49778 has 4 divisors (see below), whose sum is σ = 74670. Its totient is φ = 24888.

The previous prime is 49757. The next prime is 49783. The reversal of 49778 is 87794.

49778 is nontrivially palindromic in base 11.

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

It can be written as a sum of positive squares in only one way, i.e., 49729 + 49 = 223^2 + 7^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 49778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12443 + ... + 12446.

2⁴⁹⁷⁷⁸ is an apocalyptic number.

49778 is a deficient number, since it is larger than the sum of its proper divisors (24892).

49778 is a wasteful number, since it uses less digits than its factorization.

49778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24891.

The product of its digits is 14112, while the sum is 35.

The square root of 49778 is about 223.1098384205. The cubic root of 49778 is about 36.7857104256.

It can be divided in two parts, 497 and 78, that added together give a palindrome (575).

The spelling of 49778 in words is "forty-nine thousand, seven hundred seventy-eight".