55013563 has 4 divisors (see below), whose sum is σ = 60014808. Its totient is φ = 50012320.

The previous prime is 55013557. The next prime is 55013573. The reversal of 55013563 is 36531055.

It is a happy number.

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 55013563 - 2⁹ = 55013051 is a prime.

It is a super-2 number, since 2×55013563² = 6052984227909938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55013533) 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, 2500606 + ... + 2500627.

It is an arithmetic number, because the mean of its divisors is an integer number (15003702).

Almost surely, 2^55013563 is an apocalyptic number.

55013563 is a deficient number, since it is larger than the sum of its proper divisors (5001245).

55013563 is a wasteful number, since it uses less digits than its factorization.

55013563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001244.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 55013563 is about 7417.1128480022. The cubic root of 55013563 is about 380.3265037761.

The spelling of 55013563 in words is "fifty-five million, thirteen thousand, five hundred sixty-three".