257361045 has 16 divisors (see below), whose sum is σ = 436000320. Its totient is φ = 129185024.

The previous prime is 257361043. The next prime is 257361067. The reversal of 257361045 is 540163752.

257361045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 257361045 - 2¹ = 257361043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257360997 and 257361015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257361043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504375 + ... + 504884.

It is an arithmetic number, because the mean of its divisors is an integer number (27250020).

Almost surely, 2^257361045 is an apocalyptic number.

It is an amenable number.

257361045 is a deficient number, since it is larger than the sum of its proper divisors (178639275).

257361045 is a wasteful number, since it uses less digits than its factorization.

257361045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009284.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 257361045 is about 16042.4762739422. The cubic root of 257361045 is about 636.0837055091.

The spelling of 257361045 in words is "two hundred fifty-seven million, three hundred sixty-one thousand, forty-five".