22770001 has 4 divisors (see below), whose sum is σ = 22779904. Its totient is φ = 22760100.

The previous prime is 22769951. The next prime is 22770049. The reversal of 22770001 is 10007722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22770001 - 2¹⁵ = 22737233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22770101) 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, 496 + ... + 6766.

It is an arithmetic number, because the mean of its divisors is an integer number (5694976).

Almost surely, 2^22770001 is an apocalyptic number.

It is an amenable number.

22770001 is a deficient number, since it is larger than the sum of its proper divisors (9903).

22770001 is an equidigital number, since it uses as much as digits as its factorization.

22770001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9902.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 22770001 is about 4771.7922209585. The cubic root of 22770001 is about 283.4355689496.

Adding to 22770001 its reverse (10007722), we get a palindrome (32777723).

The spelling of 22770001 in words is "twenty-two million, seven hundred seventy thousand, one".