11557457 has 8 divisors (see below), whose sum is σ = 12047400. Its totient is φ = 11073664.

The previous prime is 11557439. The next prime is 11557459. The reversal of 11557457 is 75475511.

It can be written as a sum of positive squares in 4 ways, for example, as 4289041 + 7268416 = 2071^2 + 2696^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11557457 - 2¹⁴ = 11541073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11557459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519 + ... + 5427.

It is an arithmetic number, because the mean of its divisors is an integer number (1505925).

Almost surely, 2^11557457 is an apocalyptic number.

It is an amenable number.

11557457 is a deficient number, since it is larger than the sum of its proper divisors (489943).

11557457 is a wasteful number, since it uses less digits than its factorization.

11557457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075.

The product of its digits is 24500, while the sum is 35.

The square root of 11557457 is about 3399.6260088427. The cubic root of 11557457 is about 226.0931625724.

The spelling of 11557457 in words is "eleven million, five hundred fifty-seven thousand, four hundred fifty-seven".