5401278504 has 256 divisors, whose sum is σ = 16355328000. Its totient is φ = 1646023680.

The previous prime is 5401278503. The next prime is 5401278511. The reversal of 5401278504 is 4058721045.

It is a super-4 number, since 4×5401278504⁴ (a number of 40 digits) contains 4444 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (5401278503) 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, 22411824 + ... + 22412064.

It is an arithmetic number, because the mean of its divisors is an integer number (63888000).

Almost surely, 2^5401278504 is an apocalyptic number.

5401278504 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5401278504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8177664000).

5401278504 is an abundant number, since it is smaller than the sum of its proper divisors (10954049496).

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

5401278504 is a wasteful number, since it uses less digits than its factorization.

5401278504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 5401278504 is about 73493.3908865280. The cubic root of 5401278504 is about 1754.5490900900.

Adding to 5401278504 its reverse (4058721045), we get a palindrome (9459999549).

The spelling of 5401278504 in words is "five billion, four hundred one million, two hundred seventy-eight thousand, five hundred four".