55323011 has 2 divisors, whose sum is σ = 55323012. Its totient is φ = 55323010.

The previous prime is 55323007. The next prime is 55323013. The reversal of 55323011 is 11032355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55323011 - 2² = 55323007 is a prime.

It is a super-2 number, since 2×55323011² = 6121271092212242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 55323013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55323013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27661505 + 27661506.

It is an arithmetic number, because the mean of its divisors is an integer number (27661506).

Almost surely, 2^55323011 is an apocalyptic number.

55323011 is a deficient number, since it is larger than the sum of its proper divisors (1).

55323011 is an equidigital number, since it uses as much as digits as its factorization.

55323011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 55323011 is about 7437.9440035537. The cubic root of 55323011 is about 381.0382754905.

Adding to 55323011 its reverse (11032355), we get a palindrome (66355366).

The spelling of 55323011 in words is "fifty-five million, three hundred twenty-three thousand, eleven".