55547563 has 2 divisors, whose sum is σ = 55547564. Its totient is φ = 55547562.

The previous prime is 55547549. The next prime is 55547573. The reversal of 55547563 is 36574555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55547563 - 2¹³ = 55539371 is a prime.

It is not a weakly prime, because it can be changed into another prime (55547543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27773781 + 27773782.

It is an arithmetic number, because the mean of its divisors is an integer number (27773782).

Almost surely, 2^55547563 is an apocalyptic number.

55547563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55547563 is an equidigital number, since it uses as much as digits as its factorization.

55547563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 40.

The square root of 55547563 is about 7453.0237487881. The cubic root of 55547563 is about 381.5531149225.

The spelling of 55547563 in words is "fifty-five million, five hundred forty-seven thousand, five hundred sixty-three".