49778555 has 8 divisors (see below), whose sum is σ = 62331552. Its totient is φ = 38091328.

The previous prime is 49778543. The next prime is 49778609. The reversal of 49778555 is 55587794.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49778555 - 2⁸ = 49778299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216314 + ... + 216543.

It is an arithmetic number, because the mean of its divisors is an integer number (7791444).

Almost surely, 2^49778555 is an apocalyptic number.

49778555 is a deficient number, since it is larger than the sum of its proper divisors (12552997).

49778555 is a wasteful number, since it uses less digits than its factorization.

49778555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432885.

The product of its digits is 1764000, while the sum is 50.

The square root of 49778555 is about 7055.3919097383. The cubic root of 49778555 is about 367.8584713919.

The spelling of 49778555 in words is "forty-nine million, seven hundred seventy-eight thousand, five hundred fifty-five".