51724113 has 16 divisors (see below), whose sum is σ = 80949120. Its totient is φ = 28757376.

The previous prime is 51724109. The next prime is 51724117. The reversal of 51724113 is 31142715.

It is an interprime number because it is at equal distance from previous prime (51724109) and next prime (51724117).

It is not a de Polignac number, because 51724113 - 2² = 51724109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51724117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32508 + ... + 34061.

It is an arithmetic number, because the mean of its divisors is an integer number (5059320).

Almost surely, 2^51724113 is an apocalyptic number.

It is an amenable number.

51724113 is a deficient number, since it is larger than the sum of its proper divisors (29225007).

51724113 is a wasteful number, since it uses less digits than its factorization.

51724113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66616.

The product of its digits is 840, while the sum is 24.

The square root of 51724113 is about 7191.9477890207. The cubic root of 51724113 is about 372.5898478521.

Adding to 51724113 its reverse (31142715), we get a palindrome (82866828).

It can be divided in two parts, 517 and 24113, that multiplied together give a palindrome (12466421).

The spelling of 51724113 in words is "fifty-one million, seven hundred twenty-four thousand, one hundred thirteen".