5421178447 has 2 divisors, whose sum is σ = 5421178448. Its totient is φ = 5421178446.

The previous prime is 5421178409. The next prime is 5421178457. The reversal of 5421178447 is 7448711245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5421178447 - 2⁷ = 5421178319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5421178457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710589223 + 2710589224.

It is an arithmetic number, because the mean of its divisors is an integer number (2710589224).

Almost surely, 2^5421178447 is an apocalyptic number.

5421178447 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421178447 is an equidigital number, since it uses as much as digits as its factorization.

5421178447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 43.

The square root of 5421178447 is about 73628.6523508342. The cubic root of 5421178447 is about 1756.7012123296.

It can be divided in two parts, 542117 and 8447, that added together give a square (550564 = 742²).

The spelling of 5421178447 in words is "five billion, four hundred twenty-one million, one hundred seventy-eight thousand, four hundred forty-seven".