5151720240 has 240 divisors, whose sum is σ = 17674225920. Its totient is φ = 1344483840.

The previous prime is 5151720229. The next prime is 5151720241. The reversal of 5151720240 is 420271515.

It is a tau number, because it is divible by the number of its divisors (240).

It is not an unprimeable number, because it can be changed into a prime (5151720241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9150199 + ... + 9150761.

It is an arithmetic number, because the mean of its divisors is an integer number (73642608).

Almost surely, 2^5151720240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5151720240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8837112960).

5151720240 is an abundant number, since it is smaller than the sum of its proper divisors (12522505680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5151720240 is a wasteful number, since it uses less digits than its factorization.

5151720240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 5151720240 is about 71775.4849513398. The cubic root of 5151720240 is about 1727.0997593472.

Adding to 5151720240 its reverse (420271515), we get a palindrome (5571991755).

The spelling of 5151720240 in words is "five billion, one hundred fifty-one million, seven hundred twenty thousand, two hundred forty".