2548895561 has 8 divisors (see below), whose sum is σ = 2699288064. Its totient is φ = 2398553920.

The previous prime is 2548895533. The next prime is 2548895593. The reversal of 2548895561 is 1655988452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2548895561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2548892561) 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, 150236 + ... + 166338.

It is an arithmetic number, because the mean of its divisors is an integer number (337411008).

Almost surely, 2^2548895561 is an apocalyptic number.

It is an amenable number.

2548895561 is a deficient number, since it is larger than the sum of its proper divisors (150392503).

2548895561 is a wasteful number, since it uses less digits than its factorization.

2548895561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25431.

The product of its digits is 3456000, while the sum is 53.

The square root of 2548895561 is about 50486.5879318458. The cubic root of 2548895561 is about 1365.9999401558. Note that the first 4 decimals are identical.

The spelling of 2548895561 in words is "two billion, five hundred forty-eight million, eight hundred ninety-five thousand, five hundred sixty-one".