49777811 has 4 divisors (see below), whose sum is σ = 49887192. Its totient is φ = 49668432.

The previous prime is 49777801. The next prime is 49777817. The reversal of 49777811 is 11877794.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11877794 = 2 ⋅5938897.

It is a cyclic number.

It is not a de Polignac number, because 49777811 - 2²² = 45583507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49777817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54005 + ... + 54918.

It is an arithmetic number, because the mean of its divisors is an integer number (12471798).

Almost surely, 2^49777811 is an apocalyptic number.

49777811 is a deficient number, since it is larger than the sum of its proper divisors (109381).

49777811 is a wasteful number, since it uses less digits than its factorization.

49777811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109380.

The product of its digits is 98784, while the sum is 44.

The square root of 49777811 is about 7055.3391839089. The cubic root of 49777811 is about 367.8566386879.

The spelling of 49777811 in words is "forty-nine million, seven hundred seventy-seven thousand, eight hundred eleven".