55543011 has 4 divisors (see below), whose sum is σ = 74057352. Its totient is φ = 37028672.

The previous prime is 55542997. The next prime is 55543039. The reversal of 55543011 is 11034555.

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 55543011 - 2⁹ = 55542499 is a prime.

It is a super-2 number, since 2×55543011² = 6170052141892242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55543051) 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, 9257166 + ... + 9257171.

It is an arithmetic number, because the mean of its divisors is an integer number (18514338).

Almost surely, 2^55543011 is an apocalyptic number.

55543011 is a deficient number, since it is larger than the sum of its proper divisors (18514341).

55543011 is a wasteful number, since it uses less digits than its factorization.

55543011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18514340.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 55543011 is about 7452.7183631209. The cubic root of 55543011 is about 381.5426921597.

Adding to 55543011 its reverse (11034555), we get a palindrome (66577566).

The spelling of 55543011 in words is "fifty-five million, five hundred forty-three thousand, eleven".