22049777 has 4 divisors (see below), whose sum is σ = 22105716. Its totient is φ = 21993840.

The previous prime is 22049771. The next prime is 22049791. The reversal of 22049777 is 77794022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6964321 + 15085456 = 2639^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 22049777 - 2⁴ = 22049761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22049777.

It is not an unprimeable number, because it can be changed into a prime (22049771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27374 + ... + 28167.

It is an arithmetic number, because the mean of its divisors is an integer number (5526429).

Almost surely, 2^22049777 is an apocalyptic number.

It is an amenable number.

22049777 is a deficient number, since it is larger than the sum of its proper divisors (55939).

22049777 is an equidigital number, since it uses as much as digits as its factorization.

22049777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55938.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 22049777 is about 4695.7190077772. The cubic root of 22049777 is about 280.4151028391.

The spelling of 22049777 in words is "twenty-two million, forty-nine thousand, seven hundred seventy-seven".