11503457 has 4 divisors (see below), whose sum is σ = 13146816. Its totient is φ = 9860100.

The previous prime is 11503451. The next prime is 11503469. The reversal of 11503457 is 75430511.

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 11503457 - 2¹⁰ = 11502433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11503451) 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, 821669 + ... + 821682.

It is an arithmetic number, because the mean of its divisors is an integer number (3286704).

Almost surely, 2^11503457 is an apocalyptic number.

It is an amenable number.

11503457 is a deficient number, since it is larger than the sum of its proper divisors (1643359).

11503457 is an equidigital number, since it uses as much as digits as its factorization.

11503457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643358.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 11503457 is about 3391.6746601052. The cubic root of 11503457 is about 225.7404870927.

Adding to 11503457 its reverse (75430511), we get a palindrome (86933968).

The spelling of 11503457 in words is "eleven million, five hundred three thousand, four hundred fifty-seven".