55402011 has 24 divisors (see below), whose sum is σ = 91653120. Its totient is φ = 31590576.

The previous prime is 55402007. The next prime is 55402019. The reversal of 55402011 is 11020455.

It is not a de Polignac number, because 55402011 - 2² = 55402007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55402019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53860 + ... + 54878.

It is an arithmetic number, because the mean of its divisors is an integer number (3818880).

Almost surely, 2^55402011 is an apocalyptic number.

55402011 is a deficient number, since it is larger than the sum of its proper divisors (36251109).

55402011 is a wasteful number, since it uses less digits than its factorization.

55402011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 55402011 is about 7443.2527163868. The cubic root of 55402011 is about 381.2195605546.

Adding to 55402011 its reverse (11020455), we get a palindrome (66422466).

The spelling of 55402011 in words is "fifty-five million, four hundred two thousand, eleven".