257597141 has 4 divisors (see below), whose sum is σ = 272749932. Its totient is φ = 242444352.

The previous prime is 257597113. The next prime is 257597149. The reversal of 257597141 is 141795752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98585041 + 159012100 = 9929^2 + 12610^2 .

It is a cyclic number.

It is not a de Polignac number, because 257597141 - 2⁶ = 257597077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257597149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7576370 + ... + 7576403.

It is an arithmetic number, because the mean of its divisors is an integer number (68187483).

Almost surely, 2^257597141 is an apocalyptic number.

It is an amenable number.

257597141 is a deficient number, since it is larger than the sum of its proper divisors (15152791).

257597141 is a wasteful number, since it uses less digits than its factorization.

257597141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152790.

The product of its digits is 88200, while the sum is 41.

The square root of 257597141 is about 16049.8330520912. The cubic root of 257597141 is about 636.2781546719.

The spelling of 257597141 in words is "two hundred fifty-seven million, five hundred ninety-seven thousand, one hundred forty-one".