11649257 has 2 divisors, whose sum is σ = 11649258. Its totient is φ = 11649256.

The previous prime is 11649251. The next prime is 11649263. The reversal of 11649257 is 75294611.

It is a balanced prime because it is at equal distance from previous prime (11649251) and next prime (11649263).

It can be written as a sum of positive squares in only one way, i.e., 10523536 + 1125721 = 3244^2 + 1061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11649257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11649251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5824628 + 5824629.

It is an arithmetic number, because the mean of its divisors is an integer number (5824629).

Almost surely, 2^11649257 is an apocalyptic number.

It is an amenable number.

11649257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11649257 is an equidigital number, since it uses as much as digits as its factorization.

11649257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 11649257 is about 3413.1007896047. The cubic root of 11649257 is about 226.6901982010.

The spelling of 11649257 in words is "eleven million, six hundred forty-nine thousand, two hundred fifty-seven".