55326563 has 4 divisors (see below), whose sum is σ = 55355208. Its totient is φ = 55297920.

The previous prime is 55326559. The next prime is 55326571. The reversal of 55326563 is 36562355.

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 55326563 - 2² = 55326559 is a prime.

It is a super-2 number, since 2×55326563² = 6122057146785938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55326503) 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, 11198 + ... + 15363.

It is an arithmetic number, because the mean of its divisors is an integer number (13838802).

Almost surely, 2^55326563 is an apocalyptic number.

55326563 is a deficient number, since it is larger than the sum of its proper divisors (28645).

55326563 is a wasteful number, since it uses less digits than its factorization.

55326563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28644.

The product of its digits is 81000, while the sum is 35.

The square root of 55326563 is about 7438.1827753827. The cubic root of 55326563 is about 381.0464301382.

The spelling of 55326563 in words is "fifty-five million, three hundred twenty-six thousand, five hundred sixty-three".