2551520144 has 10 divisors (see below), whose sum is σ = 4943570310. Its totient is φ = 1275760064.

The previous prime is 2551520141. The next prime is 2551520171. The reversal of 2551520144 is 4410251552.

It can be written as a sum of positive squares in only one way, i.e., 1715616400 + 835903744 = 41420^2 + 28912^2 .

It is not an unprimeable number, because it can be changed into a prime (2551520141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79734989 + ... + 79735020.

It is an arithmetic number, because the mean of its divisors is an integer number (494357031).

Almost surely, 2^2551520144 is an apocalyptic number.

It is an amenable number.

2551520144 is a deficient number, since it is larger than the sum of its proper divisors (2392050166).

2551520144 is a wasteful number, since it uses less digits than its factorization.

2551520144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159470017 (or 159470011 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2551520144 is about 50512.5741177382. The cubic root of 2551520144 is about 1366.4686333986.

Adding to 2551520144 its reverse (4410251552), we get a palindrome (6961771696).

The spelling of 2551520144 in words is "two billion, five hundred fifty-one million, five hundred twenty thousand, one hundred forty-four".