11257471 has 4 divisors (see below), whose sum is σ = 11338600. Its totient is φ = 11176344.

The previous prime is 11257439. The next prime is 11257501. The reversal of 11257471 is 17475211.

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

It is a cyclic number.

It is not a de Polignac number, because 11257471 - 2⁵ = 11257439 is a prime.

It is a super-3 number, since 3×11257471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11255471) 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, 40356 + ... + 40633.

It is an arithmetic number, because the mean of its divisors is an integer number (2834650).

Almost surely, 2^11257471 is an apocalyptic number.

11257471 is a deficient number, since it is larger than the sum of its proper divisors (81129).

11257471 is an equidigital number, since it uses as much as digits as its factorization.

11257471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81128.

The product of its digits is 1960, while the sum is 28.

The square root of 11257471 is about 3355.2154923343. The cubic root of 11257471 is about 224.1198272038.

The spelling of 11257471 in words is "eleven million, two hundred fifty-seven thousand, four hundred seventy-one".