55120563 has 6 divisors (see below), whose sum is σ = 79618604. Its totient is φ = 36747036.

The previous prime is 55120547. The next prime is 55120601. The reversal of 55120563 is 36502155.

It is not a de Polignac number, because 55120563 - 2⁴ = 55120547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55120543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3062245 + ... + 3062262.

Almost surely, 2^55120563 is an apocalyptic number.

55120563 is a deficient number, since it is larger than the sum of its proper divisors (24498041).

55120563 is a wasteful number, since it uses less digits than its factorization.

55120563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124513 (or 6124510 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55120563 is about 7424.3223933232. The cubic root of 55120563 is about 380.5729192575.

The spelling of 55120563 in words is "fifty-five million, one hundred twenty thousand, five hundred sixty-three".