55020563 has 4 divisors (see below), whose sum is σ = 59252928. Its totient is φ = 50788200.

The previous prime is 55020557. The next prime is 55020583. The reversal of 55020563 is 36502055.

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 55020563 - 2⁴ = 55020547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55020583) 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, 2116163 + ... + 2116188.

It is an arithmetic number, because the mean of its divisors is an integer number (14813232).

Almost surely, 2^55020563 is an apocalyptic number.

55020563 is a deficient number, since it is larger than the sum of its proper divisors (4232365).

55020563 is a wasteful number, since it uses less digits than its factorization.

55020563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232364.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 55020563 is about 7417.5847147168. The cubic root of 55020563 is about 380.3426341779.

The spelling of 55020563 in words is "fifty-five million, twenty thousand, five hundred sixty-three".