5551131040 has 384 divisors, whose sum is σ = 17539296768. Its totient is φ = 1610219520.

The previous prime is 5551130969. The next prime is 5551131049. The reversal of 5551131040 is 401311555.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 5551130996 and 5551131014.

It is not an unprimeable number, because it can be changed into a prime (5551131049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10148047 + ... + 10148593.

It is an arithmetic number, because the mean of its divisors is an integer number (45675252).

Almost surely, 2^5551131040 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 5551131040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8769648384).

5551131040 is an abundant number, since it is smaller than the sum of its proper divisors (11988165728).

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

5551131040 is a wasteful number, since it uses less digits than its factorization.

5551131040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 5551131040 is about 74505.9127854964. The cubic root of 5551131040 is about 1770.6273154944.

Adding to 5551131040 its reverse (401311555), we get a palindrome (5952442595).

The spelling of 5551131040 in words is "five billion, five hundred fifty-one million, one hundred thirty-one thousand, forty".