5540145420 has 192 divisors, whose sum is σ = 16332212736. Its totient is φ = 1401845760.

The previous prime is 5540145367. The next prime is 5540145421. The reversal of 5540145420 is 245410455.

It is a super-2 number, since 2×5540145420² = 61386422549493952800, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (5540145421) 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, 19715680 + ... + 19715960.

It is an arithmetic number, because the mean of its divisors is an integer number (85063608).

Almost surely, 2^5540145420 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 5540145420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8166106368).

5540145420 is an abundant number, since it is smaller than the sum of its proper divisors (10792067316).

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

5540145420 is a wasteful number, since it uses less digits than its factorization.

5540145420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

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

The square root of 5540145420 is about 74432.1531329035. The cubic root of 5540145420 is about 1769.4585275950.

Adding to 5540145420 its reverse (245410455), we get a palindrome (5785555875).

The spelling of 5540145420 in words is "five billion, five hundred forty million, one hundred forty-five thousand, four hundred twenty".