22057961 has 2 divisors, whose sum is σ = 22057962. Its totient is φ = 22057960.

The previous prime is 22057949. The next prime is 22057963. The reversal of 22057961 is 16975022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11689561 + 10368400 = 3419^2 + 3220^2 .

It is a cyclic number.

It is not a de Polignac number, because 22057961 - 2¹⁸ = 21795817 is a prime.

It is a Sophie Germain prime.

Together with 22057963, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22057963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11028980 + 11028981.

It is an arithmetic number, because the mean of its divisors is an integer number (11028981).

Almost surely, 2^22057961 is an apocalyptic number.

It is an amenable number.

22057961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22057961 is an equidigital number, since it uses as much as digits as its factorization.

22057961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 22057961 is about 4696.5903589732. The cubic root of 22057961 is about 280.4497915245.

The spelling of 22057961 in words is "twenty-two million, fifty-seven thousand, nine hundred sixty-one".