257076121 has 2 divisors, whose sum is σ = 257076122. Its totient is φ = 257076120.

The previous prime is 257076089. The next prime is 257076151. The reversal of 257076121 is 121670752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201782025 + 55294096 = 14205^2 + 7436^2 .

It is a cyclic number.

It is not a de Polignac number, because 257076121 - 2⁵ = 257076089 is a prime.

It is not a weakly prime, because it can be changed into another prime (257076151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128538060 + 128538061.

It is an arithmetic number, because the mean of its divisors is an integer number (128538061).

Almost surely, 2^257076121 is an apocalyptic number.

It is an amenable number.

257076121 is a deficient number, since it is larger than the sum of its proper divisors (1).

257076121 is an equidigital number, since it uses as much as digits as its factorization.

257076121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 257076121 is about 16033.5935148675. The cubic root of 257076121 is about 635.8488830806.

The spelling of 257076121 in words is "two hundred fifty-seven million, seventy-six thousand, one hundred twenty-one".