24997971 has 8 divisors (see below), whose sum is σ = 34480080. Its totient is φ = 16090592.

The previous prime is 24997961. The next prime is 24997993. The reversal of 24997971 is 17979942.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24997971 - 2¹⁰ = 24996947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24997971.

It is not an unprimeable number, because it can be changed into a prime (24997961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143580 + ... + 143753.

It is an arithmetic number, because the mean of its divisors is an integer number (4310010).

Almost surely, 2^24997971 is an apocalyptic number.

24997971 is a deficient number, since it is larger than the sum of its proper divisors (9482109).

24997971 is a wasteful number, since it uses less digits than its factorization.

24997971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287365.

The product of its digits is 285768, while the sum is 48.

The square root of 24997971 is about 4999.7970958830. The cubic root of 24997971 is about 292.3938631646.

The spelling of 24997971 in words is "twenty-four million, nine hundred ninety-seven thousand, nine hundred seventy-one".