11101945 has 4 divisors (see below), whose sum is σ = 13322340. Its totient is φ = 8881552.

The previous prime is 11101933. The next prime is 11101957. The reversal of 11101945 is 54910111.

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

It is an interprime number because it is at equal distance from previous prime (11101933) and next prime (11101957).

It can be written as a sum of positive squares in 2 ways, for example, as 8779369 + 2322576 = 2963^2 + 1524^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101945 - 2¹¹ = 11099897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110190 + ... + 1110199.

It is an arithmetic number, because the mean of its divisors is an integer number (3330585).

Almost surely, 2^11101945 is an apocalyptic number.

It is an amenable number.

11101945 is a deficient number, since it is larger than the sum of its proper divisors (2220395).

11101945 is an equidigital number, since it uses as much as digits as its factorization.

11101945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220394.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 11101945 is about 3331.9581329903. The cubic root of 11101945 is about 223.0829388451.

The spelling of 11101945 in words is "eleven million, one hundred one thousand, nine hundred forty-five".