2557734979 has 2 divisors, whose sum is σ = 2557734980. Its totient is φ = 2557734978.

The previous prime is 2557734961. The next prime is 2557734997. The reversal of 2557734979 is 9794377552.

Together with next prime (2557734997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (2557734961) and next prime (2557734997).

It is a cyclic number.

It is not a de Polignac number, because 2557734979 - 2⁹ = 2557734467 is a prime.

It is not a weakly prime, because it can be changed into another prime (2557734079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278867489 + 1278867490.

It is an arithmetic number, because the mean of its divisors is an integer number (1278867490).

Almost surely, 2^2557734979 is an apocalyptic number.

2557734979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557734979 is an equidigital number, since it uses as much as digits as its factorization.

2557734979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16669800, while the sum is 58.

The square root of 2557734979 is about 50574.0544053964. The cubic root of 2557734979 is about 1367.5771871047.

The spelling of 2557734979 in words is "two billion, five hundred fifty-seven million, seven hundred thirty-four thousand, nine hundred seventy-nine".