55530379847 has 2 divisors, whose sum is σ = 55530379848. Its totient is φ = 55530379846.

The previous prime is 55530379781. The next prime is 55530379907. The reversal of 55530379847 is 74897303555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55530379847 - 2⁸ = 55530379591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55530379792 and 55530379801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55530379447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765189923 + 27765189924.

It is an arithmetic number, because the mean of its divisors is an integer number (27765189924).

Almost surely, 2^55530379847 is an apocalyptic number.

55530379847 is a deficient number, since it is larger than the sum of its proper divisors (1).

55530379847 is an equidigital number, since it uses as much as digits as its factorization.

55530379847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876000, while the sum is 56.

The spelling of 55530379847 in words is "fifty-five billion, five hundred thirty million, three hundred seventy-nine thousand, eight hundred forty-seven".