55895315447 has 2 divisors, whose sum is σ = 55895315448. Its totient is φ = 55895315446.

The previous prime is 55895315387. The next prime is 55895315477. The reversal of 55895315447 is 74451359855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55895315447 - 2²⁸ = 55626879991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55895315392 and 55895315401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55895315477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27947657723 + 27947657724.

It is an arithmetic number, because the mean of its divisors is an integer number (27947657724).

Almost surely, 2^55895315447 is an apocalyptic number.

55895315447 is a deficient number, since it is larger than the sum of its proper divisors (1).

55895315447 is an equidigital number, since it uses as much as digits as its factorization.

55895315447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120000, while the sum is 56.

The spelling of 55895315447 in words is "fifty-five billion, eight hundred ninety-five million, three hundred fifteen thousand, four hundred forty-seven".