11161487 has 2 divisors, whose sum is σ = 11161488. Its totient is φ = 11161486.

The previous prime is 11161459. The next prime is 11161489. The reversal of 11161487 is 78416111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11161487 - 2¹⁰ = 11160463 is a prime.

Together with 11161489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11161489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5580743 + 5580744.

It is an arithmetic number, because the mean of its divisors is an integer number (5580744).

Almost surely, 2^11161487 is an apocalyptic number.

11161487 is a deficient number, since it is larger than the sum of its proper divisors (1).

11161487 is an equidigital number, since it uses as much as digits as its factorization.

11161487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 29.

The square root of 11161487 is about 3340.8811711882. The cubic root of 11161487 is about 223.4810411210.

Adding to 11161487 its reverse (78416111), we get a palindrome (89577598).

The spelling of 11161487 in words is "eleven million, one hundred sixty-one thousand, four hundred eighty-seven".