257151 has 4 divisors (see below), whose sum is σ = 342872. Its totient is φ = 171432.

The previous prime is 257141. The next prime is 257161. The reversal of 257151 is 151752.

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

It is an interprime number because it is at equal distance from previous prime (257141) and next prime (257161).

It is not a de Polignac number, because 257151 - 2⁹ = 256639 is a prime.

It is a super-2 number, since 2×257151² = 132253273602, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257141) 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, 42856 + ... + 42861.

It is an arithmetic number, because the mean of its divisors is an integer number (85718).

2²⁵⁷¹⁵¹ is an apocalyptic number.

257151 is a deficient number, since it is larger than the sum of its proper divisors (85721).

257151 is an equidigital number, since it uses as much as digits as its factorization.

257151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85720.

The product of its digits is 350, while the sum is 21.

The square root of 257151 is about 507.1005817390. The cubic root of 257151 is about 63.5910612017.

The spelling of 257151 in words is "two hundred fifty-seven thousand, one hundred fifty-one".