24722261 has 2 divisors, whose sum is σ = 24722262. Its totient is φ = 24722260.

The previous prime is 24722251. The next prime is 24722273. The reversal of 24722261 is 16222742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21446161 + 3276100 = 4631^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 24722261 - 2⁶ = 24722197 is a prime.

It is a super-2 number, since 2×24722261² = 1222380377904242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 24722261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24722251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12361130 + 12361131.

It is an arithmetic number, because the mean of its divisors is an integer number (12361131).

Almost surely, 2^24722261 is an apocalyptic number.

It is an amenable number.

24722261 is a deficient number, since it is larger than the sum of its proper divisors (1).

24722261 is an equidigital number, since it uses as much as digits as its factorization.

24722261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 24722261 is about 4972.1485295594. The cubic root of 24722261 is about 291.3149206590.

The spelling of 24722261 in words is "twenty-four million, seven hundred twenty-two thousand, two hundred sixty-one".