54145420 has 48 divisors (see below), whose sum is σ = 133132608. Its totient is φ = 18109440.

The previous prime is 54145409. The next prime is 54145433. The reversal of 54145420 is 2454145.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1024 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (2773596).

Almost surely, 2^54145420 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 54145420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66566304).

54145420 is an abundant number, since it is smaller than the sum of its proper divisors (78987188).

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

54145420 is a wasteful number, since it uses less digits than its factorization.

54145420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490 (or 9488 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 54145420 is about 7358.3571536043. The cubic root of 54145420 is about 378.3153029287.

Adding to 54145420 its reverse (2454145), we get a palindrome (56599565).

The spelling of 54145420 in words is "fifty-four million, one hundred forty-five thousand, four hundred twenty".