5401523844 has 54 divisors (see below), whose sum is σ = 13994188026. Its totient is φ = 1755674880.

The previous prime is 5401523843. The next prime is 5401523893. The reversal of 5401523844 is 4483251045.

It is a happy number.

5401523844 is a `hidden beast` number, since 54 + 0 + 1 + 523 + 84 + 4 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1371813444 + 4029710400 = 37038^2 + 63480^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5401523799 and 5401523808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401523843) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2822632 + ... + 2824544.

Almost surely, 2^5401523844 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 5401523844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6997094013).

5401523844 is an abundant number, since it is smaller than the sum of its proper divisors (8592664182).

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

5401523844 is a wasteful number, since it uses less digits than its factorization.

5401523844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 5401523844 is about 73495.0599972542. The cubic root of 5401523844 is about 1754.5756550694.

Adding to 5401523844 its reverse (4483251045), we get a palindrome (9884774889).

The spelling of 5401523844 in words is "five billion, four hundred one million, five hundred twenty-three thousand, eight hundred forty-four".