257641450 has 24 divisors (see below), whose sum is σ = 522779040. Its totient is φ = 93687600.

The previous prime is 257641441. The next prime is 257641459. The reversal of 257641450 is 54146752.

It is an interprime number because it is at equal distance from previous prime (257641441) and next prime (257641459).

It is not an unprimeable number, because it can be changed into a prime (257641459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233670 + ... + 234769.

It is an arithmetic number, because the mean of its divisors is an integer number (21782460).

Almost surely, 2^257641450 is an apocalyptic number.

257641450 is an abundant number, since it is smaller than the sum of its proper divisors (265137590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257641450 is a wasteful number, since it uses less digits than its factorization.

257641450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468462 (or 468457 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 257641450 is about 16051.2133497752. The cubic root of 257641450 is about 636.3146344148.

The spelling of 257641450 in words is "two hundred fifty-seven million, six hundred forty-one thousand, four hundred fifty".