24201997 has 2 divisors, whose sum is σ = 24201998. Its totient is φ = 24201996.

The previous prime is 24201971. The next prime is 24202019. The reversal of 24201997 is 79910242.

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., 19900521 + 4301476 = 4461^2 + 2074^2 .

It is a cyclic number.

It is not a de Polignac number, because 24201997 - 2⁷ = 24201869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24201907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12100998 + 12100999.

It is an arithmetic number, because the mean of its divisors is an integer number (12100999).

Almost surely, 2^24201997 is an apocalyptic number.

It is an amenable number.

24201997 is a deficient number, since it is larger than the sum of its proper divisors (1).

24201997 is an equidigital number, since it uses as much as digits as its factorization.

24201997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 24201997 is about 4919.5525203010. The cubic root of 24201997 is about 289.2569044955.

The spelling of 24201997 in words is "twenty-four million, two hundred one thousand, nine hundred ninety-seven".