554400020 has 12 divisors (see below), whose sum is σ = 1164240084. Its totient is φ = 221760000.

The previous prime is 554400019. The next prime is 554400023. The reversal of 554400020 is 20004455.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 415018384 + 139381636 = 20372^2 + 11806^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 27720001 = 554400020 / (5 + 5 + 4 + 4 + 0 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 554399965 and 554400001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554400023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13859981 + ... + 13860020.

It is an arithmetic number, because the mean of its divisors is an integer number (97020007).

Almost surely, 2^554400020 is an apocalyptic number.

It is an amenable number.

554400020 is an abundant number, since it is smaller than the sum of its proper divisors (609840064).

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

554400020 is a wasteful number, since it uses less digits than its factorization.

554400020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27720010 (or 27720008 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 554400020 is about 23545.7006691243. The cubic root of 554400020 is about 821.5003366735.

Adding to 554400020 its reverse (20004455), we get a palindrome (574404475).

The spelling of 554400020 in words is "five hundred fifty-four million, four hundred thousand, twenty".