22250077 has 2 divisors, whose sum is σ = 22250078. Its totient is φ = 22250076.

The previous prime is 22250069. The next prime is 22250087. The reversal of 22250077 is 77005222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14791716 + 7458361 = 3846^2 + 2731^2 .

It is a cyclic number.

It is not a de Polignac number, because 22250077 - 2³ = 22250069 is a prime.

It is equal to p_1403926 and since 22250077 and 1403926 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22250017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11125038 + 11125039.

It is an arithmetic number, because the mean of its divisors is an integer number (11125039).

Almost surely, 2^22250077 is an apocalyptic number.

It is an amenable number.

22250077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22250077 is an equidigital number, since it uses as much as digits as its factorization.

22250077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 22250077 is about 4716.9987280049. The cubic root of 22250077 is about 281.2616408680.

Adding to 22250077 its reverse (77005222), we get a palindrome (99255299).

The spelling of 22250077 in words is "twenty-two million, two hundred fifty thousand, seventy-seven".