24221797 has 2 divisors, whose sum is σ = 24221798. Its totient is φ = 24221796.

The previous prime is 24221777. The next prime is 24221809. The reversal of 24221797 is 79712242.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20784481 + 3437316 = 4559^2 + 1854^2 .

It is a cyclic number.

It is not a de Polignac number, because 24221797 - 2¹¹ = 24219749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24221767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12110898 + 12110899.

It is an arithmetic number, because the mean of its divisors is an integer number (12110899).

Almost surely, 2^24221797 is an apocalyptic number.

It is an amenable number.

24221797 is a deficient number, since it is larger than the sum of its proper divisors (1).

24221797 is an equidigital number, since it uses as much as digits as its factorization.

24221797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 24221797 is about 4921.5644870305. The cubic root of 24221797 is about 289.3357647312.

The spelling of 24221797 in words is "twenty-four million, two hundred twenty-one thousand, seven hundred ninety-seven".