257122 has 8 divisors (see below), whose sum is σ = 392400. Its totient is φ = 126324.

The previous prime is 257107. The next prime is 257123. The reversal of 257122 is 221752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×257122² = 132223445768, which contains 22 as substring.

It is an Ulam number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 257122.

It is not an unprimeable number, because it can be changed into a prime (257123) by changing a digit.

257122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (49050).

2²⁵⁷¹²² is an apocalyptic number.

257122 is a deficient number, since it is larger than the sum of its proper divisors (135278).

257122 is a wasteful number, since it uses less digits than its factorization.

257122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240.

The product of its digits is 280, while the sum is 19.

The square root of 257122 is about 507.0719869999. The cubic root of 257122 is about 63.5886706347.

Adding to 257122 its reverse (221752), we get a palindrome (478874).

It can be divided in two parts, 2 and 57122, that multiplied together give a square (114244 = 338²).

The spelling of 257122 in words is "two hundred fifty-seven thousand, one hundred twenty-two".