2608157257 has 4 divisors (see below), whose sum is σ = 2619546820. Its totient is φ = 2596767696.

The previous prime is 2608157203. The next prime is 2608157263. The reversal of 2608157257 is 7527518062.

2608157257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1107292176 + 1500865081 = 33276^2 + 38741^2 .

It is a cyclic number.

It is not a de Polignac number, because 2608157257 - 2⁷ = 2608157129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2608157957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5694438 + ... + 5694895.

It is an arithmetic number, because the mean of its divisors is an integer number (654886705).

Almost surely, 2^2608157257 is an apocalyptic number.

It is an amenable number.

2608157257 is a deficient number, since it is larger than the sum of its proper divisors (11389563).

2608157257 is a wasteful number, since it uses less digits than its factorization.

2608157257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11389562.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 2608157257 is about 51070.1209808632. The cubic root of 2608157257 is about 1376.5054157923.

It can be divided in two parts, 26081 and 57257, that added together give a palindrome (83338).

The spelling of 2608157257 in words is "two billion, six hundred eight million, one hundred fifty-seven thousand, two hundred fifty-seven".