245689577 has 6 divisors (see below), whose sum is σ = 285802218. Its totient is φ = 210591024.

The previous prime is 245689571. The next prime is 245689621. The reversal of 245689577 is 775986542.

It can be written as a sum of positive squares in only one way, i.e., 220849321 + 24840256 = 14861^2 + 4984^2 .

It is not a de Polignac number, because 245689577 - 2²⁶ = 178580713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245689571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2506988 + ... + 2507085.

It is an arithmetic number, because the mean of its divisors is an integer number (47633703).

Almost surely, 2^245689577 is an apocalyptic number.

It is an amenable number.

245689577 is a deficient number, since it is larger than the sum of its proper divisors (40112641).

245689577 is an equidigital number, since it uses as much as digits as its factorization.

245689577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014087 (or 5014080 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 53.

The square root of 245689577 is about 15674.4880937146. The cubic root of 245689577 is about 626.3189868531.

The spelling of 245689577 in words is "two hundred forty-five million, six hundred eighty-nine thousand, five hundred seventy-seven".