2555144440 has 32 divisors (see below), whose sum is σ = 5755891680. Its totient is φ = 1020845952.

The previous prime is 2555144437. The next prime is 2555144443. The reversal of 2555144440 is 444415552.

It is an interprime number because it is at equal distance from previous prime (2555144437) and next prime (2555144443).

It is a junction number, because it is equal to n+sod(n) for n = 2555144396 and 2555144405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555144443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3324 + ... + 71563.

It is an arithmetic number, because the mean of its divisors is an integer number (179871615).

Almost surely, 2^2555144440 is an apocalyptic number.

2555144440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555144440 is an abundant number, since it is smaller than the sum of its proper divisors (3200747240).

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

2555144440 is a wasteful number, since it uses less digits than its factorization.

2555144440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75751 (or 75747 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The square root of 2555144440 is about 50548.4365732512. The cubic root of 2555144440 is about 1367.1153254956.

Adding to 2555144440 its reverse (444415552), we get a palindrome (2999559992).

The spelling of 2555144440 in words is "two billion, five hundred fifty-five million, one hundred forty-four thousand, four hundred forty".