55357421107 has 2 divisors, whose sum is σ = 55357421108. Its totient is φ = 55357421106.

The previous prime is 55357421099. The next prime is 55357421143. The reversal of 55357421107 is 70112475355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55357421107 - 2³ = 55357421099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55357421107.

It is not a weakly prime, because it can be changed into another prime (55357421507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27678710553 + 27678710554.

It is an arithmetic number, because the mean of its divisors is an integer number (27678710554).

Almost surely, 2^55357421107 is an apocalyptic number.

55357421107 is a deficient number, since it is larger than the sum of its proper divisors (1).

55357421107 is an equidigital number, since it uses as much as digits as its factorization.

55357421107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 55357421107 in words is "fifty-five billion, three hundred fifty-seven million, four hundred twenty-one thousand, one hundred seven".