55887563 has 2 divisors, whose sum is σ = 55887564. Its totient is φ = 55887562.

The previous prime is 55887527. The next prime is 55887577. The reversal of 55887563 is 36578855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55887563 - 2¹² = 55883467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55887593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27943781 + 27943782.

It is an arithmetic number, because the mean of its divisors is an integer number (27943782).

Almost surely, 2^55887563 is an apocalyptic number.

55887563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55887563 is an equidigital number, since it uses as much as digits as its factorization.

55887563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008000, while the sum is 47.

The square root of 55887563 is about 7475.7984857806. The cubic root of 55887563 is about 382.3300123245.

The spelling of 55887563 in words is "fifty-five million, eight hundred eighty-seven thousand, five hundred sixty-three".