6240055391 has 2 divisors, whose sum is σ = 6240055392. Its totient is φ = 6240055390.

The previous prime is 6240055363. The next prime is 6240055417. The reversal of 6240055391 is 1935500426.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6240055391 - 2¹⁰ = 6240054367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6240055301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3120027695 + 3120027696.

It is an arithmetic number, because the mean of its divisors is an integer number (3120027696).

Almost surely, 2^6240055391 is an apocalyptic number.

6240055391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6240055391 is an equidigital number, since it uses as much as digits as its factorization.

6240055391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 6240055391 is about 78994.0212357872. The cubic root of 6240055391 is about 1841.0382639576.

The spelling of 6240055391 in words is "six billion, two hundred forty million, fifty-five thousand, three hundred ninety-one".