2051275257 has 6 divisors (see below), whose sum is σ = 2962953162. Its totient is φ = 1367516832.

The previous prime is 2051275229. The next prime is 2051275277. The reversal of 2051275257 is 7525721502.

2051275257 is a `hidden beast` number, since 2 + 0 + 5 + 127 + 525 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2051274681 + 576 = 45291^2 + 24^2 .

It is not a de Polignac number, because 2051275257 - 2¹⁸ = 2051013113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2051275277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113959728 + ... + 113959745.

It is an arithmetic number, because the mean of its divisors is an integer number (493825527).

Almost surely, 2^2051275257 is an apocalyptic number.

It is an amenable number.

2051275257 is a deficient number, since it is larger than the sum of its proper divisors (911677905).

2051275257 is a wasteful number, since it uses less digits than its factorization.

2051275257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227919479 (or 227919476 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 2051275257 is about 45291.0063588788. The cubic root of 2051275257 is about 1270.5974532015.

Adding to 2051275257 its reverse (7525721502), we get a palindrome (9576996759).

The spelling of 2051275257 in words is "two billion, fifty-one million, two hundred seventy-five thousand, two hundred fifty-seven".