11562961 has 2 divisors, whose sum is σ = 11562962. Its totient is φ = 11562960.

The previous prime is 11562959. The next prime is 11562973. The reversal of 11562961 is 16926511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10439361 + 1123600 = 3231^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 11562961 - 2¹ = 11562959 is a prime.

Together with 11562959, it forms a pair of twin primes.

It is equal to p₇₆₁₁₈₈ and since 11562961 and 761188 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11562931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781480 + 5781481.

It is an arithmetic number, because the mean of its divisors is an integer number (5781481).

Almost surely, 2^11562961 is an apocalyptic number.

It is an amenable number.

11562961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11562961 is an equidigital number, since it uses as much as digits as its factorization.

11562961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 11562961 is about 3400.4354132964. The cubic root of 11562961 is about 226.1290476083.

The spelling of 11562961 in words is "eleven million, five hundred sixty-two thousand, nine hundred sixty-one".