22250087 has 2 divisors, whose sum is σ = 22250088. Its totient is φ = 22250086.

The previous prime is 22250077. The next prime is 22250099. The reversal of 22250087 is 78005222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22250087 - 2²² = 18055783 is a prime.

It is equal to p_1403927 and since 22250087 and 1403927 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, 11125043 + 11125044.

It is an arithmetic number, because the mean of its divisors is an integer number (11125044).

Almost surely, 2^22250087 is an apocalyptic number.

22250087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22250087 is an equidigital number, since it uses as much as digits as its factorization.

22250087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 22250087 is about 4716.9997880008. Note that the first 3 decimals coincide. The cubic root of 22250087 is about 281.2616830044.

The spelling of 22250087 in words is "twenty-two million, two hundred fifty thousand, eighty-seven".