24720053 has 4 divisors (see below), whose sum is σ = 24964908. Its totient is φ = 24475200.

The previous prime is 24720049. The next prime is 24720071. The reversal of 24720053 is 35002742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35002742 = 2 ⋅17501371.

It can be written as a sum of positive squares in 2 ways, for example, as 18130564 + 6589489 = 4258^2 + 2567^2 .

It is a cyclic number.

It is not a de Polignac number, because 24720053 - 2² = 24720049 is a prime.

It is a super-2 number, since 2×24720053² = 1222162040645618, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24720013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122276 + ... + 122477.

It is an arithmetic number, because the mean of its divisors is an integer number (6241227).

Almost surely, 2^24720053 is an apocalyptic number.

It is an amenable number.

24720053 is a deficient number, since it is larger than the sum of its proper divisors (244855).

24720053 is a wasteful number, since it uses less digits than its factorization.

24720053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244854.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 24720053 is about 4971.9264877912. The cubic root of 24720053 is about 291.3062477401.

Adding to 24720053 its reverse (35002742), we get a palindrome (59722795).

The spelling of 24720053 in words is "twenty-four million, seven hundred twenty thousand, fifty-three".