55624523809 has 2 divisors, whose sum is σ = 55624523810. Its totient is φ = 55624523808.

The previous prime is 55624523797. The next prime is 55624523819. The reversal of 55624523809 is 90832542655.

55624523809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37045470784 + 18579053025 = 192472^2 + 136305^2 .

It is a cyclic number.

It is not a de Polignac number, because 55624523809 - 2⁵ = 55624523777 is a prime.

It is not a weakly prime, because it can be changed into another prime (55624523819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27812261904 + 27812261905.

It is an arithmetic number, because the mean of its divisors is an integer number (27812261905).

Almost surely, 2^55624523809 is an apocalyptic number.

It is an amenable number.

55624523809 is a deficient number, since it is larger than the sum of its proper divisors (1).

55624523809 is an equidigital number, since it uses as much as digits as its factorization.

55624523809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 55624523809 in words is "fifty-five billion, six hundred twenty-four million, five hundred twenty-three thousand, eight hundred nine".