11920511 has 2 divisors, whose sum is σ = 11920512. Its totient is φ = 11920510.

The previous prime is 11920487. The next prime is 11920529. The reversal of 11920511 is 11502911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11920511 - 2²² = 7726207 is a prime.

It is a super-2 number, since 2×11920511² = 284197165002242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11920541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5960255 + 5960256.

It is an arithmetic number, because the mean of its divisors is an integer number (5960256).

Almost surely, 2^11920511 is an apocalyptic number.

11920511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11920511 is an equidigital number, since it uses as much as digits as its factorization.

11920511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 11920511 is about 3452.6093031213. The cubic root of 11920511 is about 228.4362160309.

The spelling of 11920511 in words is "eleven million, nine hundred twenty thousand, five hundred eleven".