11375861 has 4 divisors (see below), whose sum is σ = 13000992. Its totient is φ = 9750732.

The previous prime is 11375843. The next prime is 11375879. The reversal of 11375861 is 16857311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16857311 = 37 ⋅455603.

It is an interprime number because it is at equal distance from previous prime (11375843) and next prime (11375879).

It is a cyclic number.

It is not a de Polignac number, because 11375861 - 2¹⁰ = 11374837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11375821) 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, 812555 + ... + 812568.

It is an arithmetic number, because the mean of its divisors is an integer number (3250248).

Almost surely, 2^11375861 is an apocalyptic number.

It is an amenable number.

11375861 is a deficient number, since it is larger than the sum of its proper divisors (1625131).

11375861 is an equidigital number, since it uses as much as digits as its factorization.

11375861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625130.

The product of its digits is 5040, while the sum is 32.

The square root of 11375861 is about 3372.8120315250. The cubic root of 11375861 is about 224.9027464467.

The spelling of 11375861 in words is "eleven million, three hundred seventy-five thousand, eight hundred sixty-one".