11917051 has 8 divisors (see below), whose sum is σ = 13025664. Its totient is φ = 10853760.

The previous prime is 11917049. The next prime is 11917067. The reversal of 11917051 is 15071911.

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

It is a cyclic number.

It is not a de Polignac number, because 11917051 - 2¹ = 11917049 is a prime.

It is a super-2 number, since 2×11917051² = 284032209073202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11917001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10780 + ... + 11833.

It is an arithmetic number, because the mean of its divisors is an integer number (1628208).

Almost surely, 2^11917051 is an apocalyptic number.

11917051 is a deficient number, since it is larger than the sum of its proper divisors (1108613).

11917051 is a wasteful number, since it uses less digits than its factorization.

11917051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22661.

The product of its (nonzero) digits is 315, while the sum is 25.

The square root of 11917051 is about 3452.1081964504. The cubic root of 11917051 is about 228.4141122304.

Adding to 11917051 its reverse (15071911), we get a palindrome (26988962).

The spelling of 11917051 in words is "eleven million, nine hundred seventeen thousand, fifty-one".