11161457 has 12 divisors (see below), whose sum is σ = 11886336. Its totient is φ = 10469520.

The previous prime is 11161453. The next prime is 11161459. The reversal of 11161457 is 75416111.

It is a happy number.

It is not a de Polignac number, because 11161457 - 2² = 11161453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11161453) 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 11 ways as a sum of consecutive naturals, for example, 42308 + ... + 42570.

It is an arithmetic number, because the mean of its divisors is an integer number (990528).

Almost surely, 2^11161457 is an apocalyptic number.

It is an amenable number.

11161457 is a deficient number, since it is larger than the sum of its proper divisors (724879).

11161457 is an equidigital number, since it uses as much as digits as its factorization.

11161457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 331 counting only the distinct ones).

The product of its digits is 840, while the sum is 26.

The square root of 11161457 is about 3340.8766813518. The cubic root of 11161457 is about 223.4808408956.

Adding to 11161457 its reverse (75416111), we get a palindrome (86577568).

The spelling of 11161457 in words is "eleven million, one hundred sixty-one thousand, four hundred fifty-seven".