2445578257 has 2 divisors, whose sum is σ = 2445578258. Its totient is φ = 2445578256.

The previous prime is 2445578171. The next prime is 2445578297. The reversal of 2445578257 is 7528755442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1825767441 + 619810816 = 42729^2 + 24896^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445578257 - 2¹¹ = 2445576209 is a prime.

It is a super-2 number, since 2×2445578257² = 11961706022222316098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2445578257.

It is not a weakly prime, because it can be changed into another prime (2445578297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222789128 + 1222789129.

It is an arithmetic number, because the mean of its divisors is an integer number (1222789129).

Almost surely, 2^2445578257 is an apocalyptic number.

It is an amenable number.

2445578257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445578257 is an equidigital number, since it uses as much as digits as its factorization.

2445578257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136000, while the sum is 49.

The square root of 2445578257 is about 49452.7881620440. The cubic root of 2445578257 is about 1347.2882478027.

The spelling of 2445578257 in words is "two billion, four hundred forty-five million, five hundred seventy-eight thousand, two hundred fifty-seven".