2551155040 has 48 divisors (see below), whose sum is σ = 6888121632. Its totient is φ = 874681344.

The previous prime is 2551154933. The next prime is 2551155049. The reversal of 2551155040 is 405511552.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551155049) 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, 1137789 + ... + 1140028.

It is an arithmetic number, because the mean of its divisors is an integer number (143502534).

Almost surely, 2^2551155040 is an apocalyptic number.

2551155040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551155040 is an abundant number, since it is smaller than the sum of its proper divisors (4336966592).

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

2551155040 is a wasteful number, since it uses less digits than its factorization.

2551155040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277839 (or 2277831 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 2551155040 is about 50508.9599972124. The cubic root of 2551155040 is about 1366.4034530441.

Adding to 2551155040 its reverse (405511552), we get a palindrome (2956666592).

The spelling of 2551155040 in words is "two billion, five hundred fifty-one million, one hundred fifty-five thousand, forty".