11421497 has 4 divisors (see below), whose sum is σ = 11508816. Its totient is φ = 11334180.

The previous prime is 11421481. The next prime is 11421499. The reversal of 11421497 is 79412411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11421497 - 2⁴ = 11421481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421499) 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 in 3 ways as a sum of consecutive naturals, for example, 43463 + ... + 43724.

It is an arithmetic number, because the mean of its divisors is an integer number (2877204).

Almost surely, 2^11421497 is an apocalyptic number.

It is an amenable number.

11421497 is a deficient number, since it is larger than the sum of its proper divisors (87319).

11421497 is an equidigital number, since it uses as much as digits as its factorization.

11421497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87318.

The product of its digits is 2016, while the sum is 29.

The square root of 11421497 is about 3379.5705348461. The cubic root of 11421497 is about 225.2030890610.

The spelling of 11421497 in words is "eleven million, four hundred twenty-one thousand, four hundred ninety-seven".