1257163 has 2 divisors, whose sum is σ = 1257164. Its totient is φ = 1257162.

The previous prime is 1257131. The next prime is 1257199. The reversal of 1257163 is 3617521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1257163 - 2⁵ = 1257131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1257103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628581 + 628582.

It is an arithmetic number, because the mean of its divisors is an integer number (628582).

2^1257163 is an apocalyptic number.

1257163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257163 is an equidigital number, since it uses as much as digits as its factorization.

1257163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 1257163 is about 1121.2328036585. The cubic root of 1257163 is about 107.9271055893.

It can be divided in two parts, 12 and 57163, that added together give a palindrome (57175).

The spelling of 1257163 in words is "one million, two hundred fifty-seven thousand, one hundred sixty-three".