2533564840 has 16 divisors (see below), whose sum is σ = 5700520980. Its totient is φ = 1013425920.

The previous prime is 2533564829. The next prime is 2533564907. The reversal of 2533564840 is 484653352.

It can be written as a sum of positive squares in 2 ways, for example, as 2471879524 + 61685316 = 49718^2 + 7854^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 63339121 = 2533564840 / (2 + 5 + 3 + 3 + 5 + 6 + 4 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2533564793 and 2533564802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31669521 + ... + 31669600.

Almost surely, 2^2533564840 is an apocalyptic number.

2533564840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2533564840 is an abundant number, since it is smaller than the sum of its proper divisors (3166956140).

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

2533564840 is a wasteful number, since it uses less digits than its factorization.

2533564840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63339132 (or 63339128 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The square root of 2533564840 is about 50334.5293014646. The cubic root of 2533564840 is about 1363.2557593741.

The spelling of 2533564840 in words is "two billion, five hundred thirty-three million, five hundred sixty-four thousand, eight hundred forty".