55537663 has 4 divisors (see below), whose sum is σ = 57952368. Its totient is φ = 53122960.

The previous prime is 55537637. The next prime is 55537679. The reversal of 55537663 is 36673555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36673555 = 5 ⋅7334711.

It is a cyclic number.

It is not a de Polignac number, because 55537663 - 2⁵ = 55537631 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 (55537613) 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, 1207318 + ... + 1207363.

It is an arithmetic number, because the mean of its divisors is an integer number (14488092).

Almost surely, 2^55537663 is an apocalyptic number.

55537663 is a deficient number, since it is larger than the sum of its proper divisors (2414705).

55537663 is a wasteful number, since it uses less digits than its factorization.

55537663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414704.

The product of its digits is 283500, while the sum is 40.

The square root of 55537663 is about 7452.3595592269. The cubic root of 55537663 is about 381.5304460596.

The spelling of 55537663 in words is "fifty-five million, five hundred thirty-seven thousand, six hundred sixty-three".