2531503145 has 8 divisors (see below), whose sum is σ = 3038130504. Its totient is φ = 2024984704.

The previous prime is 2531503127. The next prime is 2531503159. The reversal of 2531503145 is 5413051352.

2531503145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1831583209 + 699919936 = 42797^2 + 26456^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2531503145 - 2¹⁸ = 2531241001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38207 + ... + 80763.

It is an arithmetic number, because the mean of its divisors is an integer number (379766313).

Almost surely, 2^2531503145 is an apocalyptic number.

It is an amenable number.

2531503145 is a deficient number, since it is larger than the sum of its proper divisors (506627359).

2531503145 is a wasteful number, since it uses less digits than its factorization.

2531503145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54459.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 2531503145 is about 50314.0452060853. The cubic root of 2531503145 is about 1362.8858747139.

Adding to 2531503145 its reverse (5413051352), we get a palindrome (7944554497).

The spelling of 2531503145 in words is "two billion, five hundred thirty-one million, five hundred three thousand, one hundred forty-five".