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11975141 = 18166161
BaseRepresentation
bin101101101011…
…100111100101
3211112101210202
4231223213211
511031201031
61104400245
7203533643
oct55534745
924471722
1011975141
11683a112
124016085
1326338a9
14183a193
1510b82cb
hexb6b9e5

11975141 has 4 divisors (see below), whose sum is σ = 12041484. Its totient is φ = 11908800.

The previous prime is 11975137. The next prime is 11975143. The reversal of 11975141 is 14157911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14157911 = 15193761.

It can be written as a sum of positive squares in 2 ways, for example, as 5452225 + 6522916 = 2335^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 11975141 - 22 = 11975137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975143) 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, 32900 + ... + 33261.

It is an arithmetic number, because the mean of its divisors is an integer number (3010371).

Almost surely, 211975141 is an apocalyptic number.

It is an amenable number.

11975141 is a deficient number, since it is larger than the sum of its proper divisors (66343).

11975141 is an equidigital number, since it uses as much as digits as its factorization.

11975141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66342.

The product of its digits is 1260, while the sum is 29.

The square root of 11975141 is about 3460.5116673694. The cubic root of 11975141 is about 228.7846478219.

The spelling of 11975141 in words is "eleven million, nine hundred seventy-five thousand, one hundred forty-one".

Divisors: 1 181 66161 11975141