257207051 has 2 divisors, whose sum is σ = 257207052. Its totient is φ = 257207050.

The previous prime is 257207029. The next prime is 257207081. The reversal of 257207051 is 150702752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257207051 - 2⁶ = 257206987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (257207011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128603525 + 128603526.

It is an arithmetic number, because the mean of its divisors is an integer number (128603526).

Almost surely, 2^257207051 is an apocalyptic number.

257207051 is a deficient number, since it is larger than the sum of its proper divisors (1).

257207051 is an equidigital number, since it uses as much as digits as its factorization.

257207051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 257207051 is about 16037.6759850048. The cubic root of 257207051 is about 635.9568116382.

The spelling of 257207051 in words is "two hundred fifty-seven million, two hundred seven thousand, fifty-one".