2578262447 has 2 divisors, whose sum is σ = 2578262448. Its totient is φ = 2578262446.

The previous prime is 2578262389. The next prime is 2578262459. The reversal of 2578262447 is 7442628752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2578262447 - 2⁸ = 2578262191 is a prime.

It is a super-2 number, since 2×2578262447² = 13294874491220855618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2578262497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289131223 + 1289131224.

It is an arithmetic number, because the mean of its divisors is an integer number (1289131224).

Almost surely, 2^2578262447 is an apocalyptic number.

2578262447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578262447 is an equidigital number, since it uses as much as digits as its factorization.

2578262447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1505280, while the sum is 47.

The square root of 2578262447 is about 50776.5934954286. The cubic root of 2578262447 is about 1371.2260051970.

The spelling of 2578262447 in words is "two billion, five hundred seventy-eight million, two hundred sixty-two thousand, four hundred forty-seven".