55455511 has 4 divisors (see below), whose sum is σ = 57367800. Its totient is φ = 53543224.

The previous prime is 55455487. The next prime is 55455539. The reversal of 55455511 is 11555455.

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

It is a cyclic number.

It is not a de Polignac number, because 55455511 - 2²⁵ = 21901079 is a prime.

It is a super-2 number, since 2×55455511² = 6150627400542242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55455011) 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, 956101 + ... + 956158.

It is an arithmetic number, because the mean of its divisors is an integer number (14341950).

Almost surely, 2^55455511 is an apocalyptic number.

55455511 is a deficient number, since it is larger than the sum of its proper divisors (1912289).

55455511 is a wasteful number, since it uses less digits than its factorization.

55455511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912288.

The product of its digits is 12500, while the sum is 31.

The square root of 55455511 is about 7446.8457080834. The cubic root of 55455511 is about 381.3422317033.

It can be divided in two parts, 554 and 55511, that added together give a palindrome (56065).

The spelling of 55455511 in words is "fifty-five million, four hundred fifty-five thousand, five hundred eleven".