2531133522 has 40 divisors (see below), whose sum is σ = 5696040636. Its totient is φ = 840077568.

The previous prime is 2531133497. The next prime is 2531133541. The reversal of 2531133522 is 2253311352.

It is a happy number.

2531133522 is a `hidden beast` number, since 2 + 5 + 3 + 1 + 133 + 522 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2513919321 + 17214201 = 50139^2 + 4149^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4218 + ... + 71274.

Almost surely, 2^2531133522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2531133522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2848020318).

2531133522 is an abundant number, since it is smaller than the sum of its proper divisors (3164907114).

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

2531133522 is a wasteful number, since it uses less digits than its factorization.

2531133522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67304 (or 67295 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 2531133522 is about 50310.3719127577. The cubic root of 2531133522 is about 1362.8195401482.

Adding to 2531133522 its reverse (2253311352), we get a palindrome (4784444874).

The spelling of 2531133522 in words is "two billion, five hundred thirty-one million, one hundred thirty-three thousand, five hundred twenty-two".