22400051 has 2 divisors, whose sum is σ = 22400052. Its totient is φ = 22400050.

The previous prime is 22400041. The next prime is 22400057. The reversal of 22400051 is 15000422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22400051 - 2⁶ = 22399987 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 22399999 and 22400035.

It is not a weakly prime, because it can be changed into another prime (22400057) 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 as a sum of consecutive naturals, namely, 11200025 + 11200026.

It is an arithmetic number, because the mean of its divisors is an integer number (11200026).

Almost surely, 2^22400051 is an apocalyptic number.

22400051 is a deficient number, since it is larger than the sum of its proper divisors (1).

22400051 is an equidigital number, since it uses as much as digits as its factorization.

22400051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 22400051 is about 4732.8692143350. The cubic root of 22400051 is about 281.8921632183.

Adding to 22400051 its reverse (15000422), we get a palindrome (37400473).

The spelling of 22400051 in words is "twenty-two million, four hundred thousand, fifty-one".