11156457 has 8 divisors (see below), whose sum is σ = 16019584. Its totient is φ = 6865488.

The previous prime is 11156441. The next prime is 11156461. The reversal of 11156457 is 75465111.

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

It is not a de Polignac number, because 11156457 - 2⁴ = 11156441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11156657) 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, 142993 + ... + 143070.

It is an arithmetic number, because the mean of its divisors is an integer number (2002448).

Almost surely, 2^11156457 is an apocalyptic number.

It is an amenable number.

11156457 is a deficient number, since it is larger than the sum of its proper divisors (4863127).

11156457 is a wasteful number, since it uses less digits than its factorization.

11156457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286079.

The product of its digits is 4200, while the sum is 30.

The square root of 11156457 is about 3340.1282909493. The cubic root of 11156457 is about 223.4474649932.

The spelling of 11156457 in words is "eleven million, one hundred fifty-six thousand, four hundred fifty-seven".