11157851 has 4 divisors (see below), whose sum is σ = 11199600. Its totient is φ = 11116104.

The previous prime is 11157827. The next prime is 11157869. The reversal of 11157851 is 15875111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15875111 = 7 ⋅2267873.

It is a cyclic number.

It is not a de Polignac number, because 11157851 - 2⁶ = 11157787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11157451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20471 + ... + 21008.

It is an arithmetic number, because the mean of its divisors is an integer number (2799900).

Almost surely, 2^11157851 is an apocalyptic number.

11157851 is a deficient number, since it is larger than the sum of its proper divisors (41749).

11157851 is an equidigital number, since it uses as much as digits as its factorization.

11157851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41748.

The product of its digits is 1400, while the sum is 29.

The square root of 11157851 is about 3340.3369590507. The cubic root of 11157851 is about 223.4567711971.

The spelling of 11157851 in words is "eleven million, one hundred fifty-seven thousand, eight hundred fifty-one".