2557105069 has 2 divisors, whose sum is σ = 2557105070. Its totient is φ = 2557105068.

The previous prime is 2557105027. The next prime is 2557105087. The reversal of 2557105069 is 9605017552.

2557105069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2305248169 + 251856900 = 48013^2 + 15870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557105069 - 2¹³ = 2557096877 is a prime.

It is a super-2 number, since 2×2557105069² = 13077572667810989522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557105009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278552534 + 1278552535.

It is an arithmetic number, because the mean of its divisors is an integer number (1278552535).

Almost surely, 2^2557105069 is an apocalyptic number.

It is an amenable number.

2557105069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557105069 is an equidigital number, since it uses as much as digits as its factorization.

2557105069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 40.

The square root of 2557105069 is about 50567.8264215499. The cubic root of 2557105069 is about 1367.4649105161.

The spelling of 2557105069 in words is "two billion, five hundred fifty-seven million, one hundred five thousand, sixty-nine".