5511254144 has 64 divisors (see below), whose sum is σ = 11991650400. Its totient is φ = 2502174720.

The previous prime is 5511254093. The next prime is 5511254179. The reversal of 5511254144 is 4414521155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 5511254144.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1587899 + ... + 1591365.

Almost surely, 2^5511254144 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 5511254144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5995825200).

5511254144 is an abundant number, since it is smaller than the sum of its proper divisors (6480396256).

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

5511254144 is a wasteful number, since it uses less digits than its factorization.

5511254144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621 (or 4609 counting only the distinct ones).

The product of its digits is 16000, while the sum is 32.

The square root of 5511254144 is about 74237.8215197617. The cubic root of 5511254144 is about 1766.3773185712.

Adding to 5511254144 its reverse (4414521155), we get a palindrome (9925775299).

The spelling of 5511254144 in words is "five billion, five hundred eleven million, two hundred fifty-four thousand, one hundred forty-four".