22077005 has 4 divisors (see below), whose sum is σ = 26492412. Its totient is φ = 17661600.

The previous prime is 22076963. The next prime is 22077007. The reversal of 22077005 is 50077022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50077022 = 2 ⋅25038511.

It can be written as a sum of positive squares in 2 ways, for example, as 14645929 + 7431076 = 3827^2 + 2726^2 .

It is not a de Polignac number, because 22077005 - 2²⁰ = 21028429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22077007) 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, 2207696 + ... + 2207705.

It is an arithmetic number, because the mean of its divisors is an integer number (6623103).

Almost surely, 2^22077005 is an apocalyptic number.

It is an amenable number.

22077005 is a deficient number, since it is larger than the sum of its proper divisors (4415407).

22077005 is an equidigital number, since it uses as much as digits as its factorization.

22077005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415406.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 22077005 is about 4698.6173498169. The cubic root of 22077005 is about 280.5304781835.

The spelling of 22077005 in words is "twenty-two million, seventy-seven thousand, five".