11722457 has 4 divisors (see below), whose sum is σ = 11854260. Its totient is φ = 11590656.

The previous prime is 11722429. The next prime is 11722489. The reversal of 11722457 is 75422711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5148361 + 6574096 = 2269^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 11722457 - 2⁶ = 11722393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11722057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65768 + ... + 65945.

It is an arithmetic number, because the mean of its divisors is an integer number (2963565).

Almost surely, 2^11722457 is an apocalyptic number.

It is an amenable number.

11722457 is a deficient number, since it is larger than the sum of its proper divisors (131803).

11722457 is an equidigital number, since it uses as much as digits as its factorization.

11722457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131802.

The product of its digits is 3920, while the sum is 29.

The square root of 11722457 is about 3423.8073836009. The cubic root of 11722457 is about 227.1640220361.

The spelling of 11722457 in words is "eleven million, seven hundred twenty-two thousand, four hundred fifty-seven".