11478457 has 2 divisors, whose sum is σ = 11478458. Its totient is φ = 11478456.

The previous prime is 11478443. The next prime is 11478487. The reversal of 11478457 is 75487411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 1308736 = 3189^2 + 1144^2 .

It is a cyclic number.

It is not a de Polignac number, because 11478457 - 2¹⁵ = 11445689 is a prime.

It is not a weakly prime, because it can be changed into another prime (11478407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5739228 + 5739229.

It is an arithmetic number, because the mean of its divisors is an integer number (5739229).

Almost surely, 2^11478457 is an apocalyptic number.

It is an amenable number.

11478457 is a deficient number, since it is larger than the sum of its proper divisors (1).

11478457 is an equidigital number, since it uses as much as digits as its factorization.

11478457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31360, while the sum is 37.

The square root of 11478457 is about 3387.9871605424. The cubic root of 11478457 is about 225.5768375802.

It can be divided in two parts, 11478 and 457, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 11478457 in words is "eleven million, four hundred seventy-eight thousand, four hundred fifty-seven".