11257143 has 8 divisors (see below), whose sum is σ = 15662208. Its totient is φ = 7178424.

The previous prime is 11257109. The next prime is 11257151. The reversal of 11257143 is 34175211.

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

It is not a de Polignac number, because 11257143 - 2⁶ = 11257079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11257243) 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, 81505 + ... + 81642.

It is an arithmetic number, because the mean of its divisors is an integer number (1957776).

Almost surely, 2^11257143 is an apocalyptic number.

11257143 is a deficient number, since it is larger than the sum of its proper divisors (4405065).

11257143 is a wasteful number, since it uses less digits than its factorization.

11257143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163173.

The product of its digits is 840, while the sum is 24.

The square root of 11257143 is about 3355.1666128525. The cubic root of 11257143 is about 224.1176505154.

The spelling of 11257143 in words is "eleven million, two hundred fifty-seven thousand, one hundred forty-three".