257427701 has 2 divisors, whose sum is σ = 257427702. Its totient is φ = 257427700.

The previous prime is 257427683. The next prime is 257427727. The reversal of 257427701 is 107724752.

257427701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192238225 + 65189476 = 13865^2 + 8074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257427701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257427101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128713850 + 128713851.

It is an arithmetic number, because the mean of its divisors is an integer number (128713851).

Almost surely, 2^257427701 is an apocalyptic number.

It is an amenable number.

257427701 is a deficient number, since it is larger than the sum of its proper divisors (1).

257427701 is an equidigital number, since it uses as much as digits as its factorization.

257427701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 257427701 is about 16044.5536242053. The cubic root of 257427701 is about 636.1386155747.

The spelling of 257427701 in words is "two hundred fifty-seven million, four hundred twenty-seven thousand, seven hundred one".