7578285457 has 2 divisors, whose sum is σ = 7578285458. Its totient is φ = 7578285456.

The previous prime is 7578285443. The next prime is 7578285467. The reversal of 7578285457 is 7545828757.

7578285457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7398752256 + 179533201 = 86016^2 + 13399^2 .

It is a cyclic number.

It is not a de Polignac number, because 7578285457 - 2⁷ = 7578285329 is a prime.

It is a super-3 number, since 3×7578285457³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7578285427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3789142728 + 3789142729.

It is an arithmetic number, because the mean of its divisors is an integer number (3789142729).

Almost surely, 2^7578285457 is an apocalyptic number.

It is an amenable number.

7578285457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7578285457 is an equidigital number, since it uses as much as digits as its factorization.

7578285457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21952000, while the sum is 58.

The square root of 7578285457 is about 87053.3483388204. The cubic root of 7578285457 is about 1964.2208650455.

The spelling of 7578285457 in words is "seven billion, five hundred seventy-eight million, two hundred eighty-five thousand, four hundred fifty-seven".