2557612316 has 12 divisors (see below), whose sum is σ = 5115224688. Its totient is φ = 1096119552.

The previous prime is 2557612307. The next prime is 2557612327. The reversal of 2557612316 is 6132167552.

It is a happy number.

2557612316 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2557612316.

It is a congruent number.

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, 45671621 + ... + 45671676.

It is an arithmetic number, because the mean of its divisors is an integer number (426268724).

Almost surely, 2^2557612316 is an apocalyptic number.

It is an amenable number.

2557612316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2557612316 is a wasteful number, since it uses less digits than its factorization.

2557612316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91343308 (or 91343306 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 2557612316 is about 50572.8416840501. The cubic root of 2557612316 is about 1367.5553248185. Note that the first 3 decimals are identical.

Adding to 2557612316 its reverse (6132167552), we get a palindrome (8689779868).

The spelling of 2557612316 in words is "two billion, five hundred fifty-seven million, six hundred twelve thousand, three hundred sixteen".