22819261 has 2 divisors, whose sum is σ = 22819262. Its totient is φ = 22819260.

The previous prime is 22819249. The next prime is 22819267. The reversal of 22819261 is 16291822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 4756761 = 4250^2 + 2181^2 .

It is a cyclic number.

It is not a de Polignac number, because 22819261 - 2⁹ = 22818749 is a prime.

It is a super-2 number, since 2×22819261² = 1041437345172242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22819267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11409630 + 11409631.

It is an arithmetic number, because the mean of its divisors is an integer number (11409631).

Almost surely, 2^22819261 is an apocalyptic number.

It is an amenable number.

22819261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22819261 is an equidigital number, since it uses as much as digits as its factorization.

22819261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 22819261 is about 4776.9510150304. The cubic root of 22819261 is about 283.6398139977.

The spelling of 22819261 in words is "twenty-two million, eight hundred nineteen thousand, two hundred sixty-one".