5405521440 has 192 divisors, whose sum is σ = 18625324032. Its totient is φ = 1306905600.

The previous prime is 5405521427. The next prime is 5405521469. The reversal of 5405521440 is 441255045.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5405521398 and 5405521407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2337885 + ... + 2340195.

It is an arithmetic number, because the mean of its divisors is an integer number (97006896).

Almost surely, 2^5405521440 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 5405521440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9312662016).

5405521440 is an abundant number, since it is smaller than the sum of its proper divisors (13219802592).

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

5405521440 is a wasteful number, since it uses less digits than its factorization.

5405521440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2775 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 5405521440 is about 73522.2513257041. The cubic root of 5405521440 is about 1755.0083943722.

Adding to 5405521440 its reverse (441255045), we get a palindrome (5846776485).

The spelling of 5405521440 in words is "five billion, four hundred five million, five hundred twenty-one thousand, four hundred forty".