55563109 has 12 divisors (see below), whose sum is σ = 65549088. Its totient is φ = 46951800.

The previous prime is 55563107. The next prime is 55563119. The reversal of 55563109 is 90136555.

It is not a de Polignac number, because 55563109 - 2¹ = 55563107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55563103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4507 + ... + 11464.

It is an arithmetic number, because the mean of its divisors is an integer number (5462424).

Almost surely, 2^55563109 is an apocalyptic number.

It is an amenable number.

55563109 is a deficient number, since it is larger than the sum of its proper divisors (9985979).

55563109 is a wasteful number, since it uses less digits than its factorization.

55563109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16056 (or 16049 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 55563109 is about 7454.0666082347. The cubic root of 55563109 is about 381.5887064716.

The spelling of 55563109 in words is "fifty-five million, five hundred sixty-three thousand, one hundred nine".