5211131440 has 40 divisors (see below), whose sum is σ = 12193081200. Its totient is φ = 2071170816.

The previous prime is 5211131417. The next prime is 5211131449. The reversal of 5211131440 is 441311125.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (5211131449) 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, 194890 + ... + 220009.

It is an arithmetic number, because the mean of its divisors is an integer number (304827030).

Almost surely, 2^5211131440 is an apocalyptic number.

It is an amenable number.

5211131440 is an abundant number, since it is smaller than the sum of its proper divisors (6981949760).

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

5211131440 is a wasteful number, since it uses less digits than its factorization.

5211131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415069 (or 415063 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 5211131440 is about 72188.1668973524. The cubic root of 5211131440 is about 1733.7135461129.

Adding to 5211131440 its reverse (441311125), we get a palindrome (5652442565).

The spelling of 5211131440 in words is "five billion, two hundred eleven million, one hundred thirty-one thousand, four hundred forty".