257212877 has 2 divisors, whose sum is σ = 257212878. Its totient is φ = 257212876.

The previous prime is 257212871. The next prime is 257212957. The reversal of 257212877 is 778212752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246050596 + 11162281 = 15686^2 + 3341^2 .

It is a cyclic number.

It is not a de Polignac number, because 257212877 - 2⁸ = 257212621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257212871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128606438 + 128606439.

It is an arithmetic number, because the mean of its divisors is an integer number (128606439).

Almost surely, 2^257212877 is an apocalyptic number.

It is an amenable number.

257212877 is a deficient number, since it is larger than the sum of its proper divisors (1).

257212877 is an equidigital number, since it uses as much as digits as its factorization.

257212877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109760, while the sum is 41.

The square root of 257212877 is about 16037.8576187719. The cubic root of 257212877 is about 635.9616132904.

The spelling of 257212877 in words is "two hundred fifty-seven million, two hundred twelve thousand, eight hundred seventy-seven".