22250261 has 4 divisors (see below), whose sum is σ = 24273024. Its totient is φ = 20227500.

The previous prime is 22250251. The next prime is 22250321. The reversal of 22250261 is 16205222.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22250261 is a prime.

It is a super-2 number, since 2×22250261² = 990148229136242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22250251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011365 + ... + 1011386.

It is an arithmetic number, because the mean of its divisors is an integer number (6068256).

Almost surely, 2^22250261 is an apocalyptic number.

It is an amenable number.

22250261 is a deficient number, since it is larger than the sum of its proper divisors (2022763).

22250261 is a wasteful number, since it uses less digits than its factorization.

22250261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022762.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22250261 is about 4717.0182318918. The cubic root of 22250261 is about 281.2624161761.

Adding to 22250261 its reverse (16205222), we get a palindrome (38455483).

The spelling of 22250261 in words is "twenty-two million, two hundred fifty thousand, two hundred sixty-one".