2557351651 has 2 divisors, whose sum is σ = 2557351652. Its totient is φ = 2557351650.

The previous prime is 2557351649. The next prime is 2557351673. The reversal of 2557351651 is 1561537552.

2557351651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2557351651 - 2¹ = 2557351649 is a prime.

Together with 2557351649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2557351751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278675825 + 1278675826.

It is an arithmetic number, because the mean of its divisors is an integer number (1278675826).

Almost surely, 2^2557351651 is an apocalyptic number.

2557351651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557351651 is an equidigital number, since it uses as much as digits as its factorization.

2557351651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 40.

The square root of 2557351651 is about 50570.2644940681. The cubic root of 2557351651 is about 1367.5088640476.

The spelling of 2557351651 in words is "two billion, five hundred fifty-seven million, three hundred fifty-one thousand, six hundred fifty-one".