55522011 has 4 divisors (see below), whose sum is σ = 74029352. Its totient is φ = 37014672.

The previous prime is 55522007. The next prime is 55522013. The reversal of 55522011 is 11022555.

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

It is not a de Polignac number, because 55522011 - 2² = 55522007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55522013) 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, 9253666 + ... + 9253671.

It is an arithmetic number, because the mean of its divisors is an integer number (18507338).

Almost surely, 2^55522011 is an apocalyptic number.

55522011 is a deficient number, since it is larger than the sum of its proper divisors (18507341).

55522011 is a wasteful number, since it uses less digits than its factorization.

55522011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18507340.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 55522011 is about 7451.3093480274. The cubic root of 55522011 is about 381.4946008613.

Adding to 55522011 its reverse (11022555), we get a palindrome (66544566).

The spelling of 55522011 in words is "fifty-five million, five hundred twenty-two thousand, eleven".