1157263 has 2 divisors, whose sum is σ = 1157264. Its totient is φ = 1157262.

The previous prime is 1157257. The next prime is 1157279. The reversal of 1157263 is 3627511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1157263 - 2⁹ = 1156751 is a prime.

It is a super-4 number, since 4×1157263⁴ (a number of 25 digits) contains 4444 as substring.

1157263 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578631 + 578632.

It is an arithmetic number, because the mean of its divisors is an integer number (578632).

2^1157263 is an apocalyptic number.

1157263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157263 is an equidigital number, since it uses as much as digits as its factorization.

1157263 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 1157263 is about 1075.7615906882. The cubic root of 1157263 is about 104.9890540366.

The spelling of 1157263 in words is "one million, one hundred fifty-seven thousand, two hundred sixty-three".