11756971 has 2 divisors, whose sum is σ = 11756972. Its totient is φ = 11756970.

The previous prime is 11756923. The next prime is 11757001. The reversal of 11756971 is 17965711.

It is a strong prime.

It is an emirp because it is prime and its reverse (17965711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11756971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11756971.

It is not a weakly prime, because it can be changed into another prime (21756971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5878485 + 5878486.

It is an arithmetic number, because the mean of its divisors is an integer number (5878486).

Almost surely, 2^11756971 is an apocalyptic number.

11756971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11756971 is an equidigital number, since it uses as much as digits as its factorization.

11756971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 37.

The square root of 11756971 is about 3428.8439742864. The cubic root of 11756971 is about 227.3867471566.

The spelling of 11756971 in words is "eleven million, seven hundred fifty-six thousand, nine hundred seventy-one".