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257275 = 5241251
BaseRepresentation
bin111110110011111011
3111001220201
4332303323
531213100
65303031
72121034
oct766373
9431821
10257275
11166327
12104a77
1390145
1469a8b
155136a
hex3ecfb

257275 has 12 divisors (see below), whose sum is σ = 328104. Its totient is φ = 200000.

The previous prime is 257273. The next prime is 257281. The reversal of 257275 is 572752.

It is not a de Polignac number, because 257275 - 21 = 257273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257273) 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, 900 + ... + 1150.

It is an arithmetic number, because the mean of its divisors is an integer number (27342).

2257275 is an apocalyptic number.

257275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

257275 is a deficient number, since it is larger than the sum of its proper divisors (70829).

257275 is a wasteful number, since it uses less digits than its factorization.

257275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 297 counting only the distinct ones).

The product of its digits is 4900, while the sum is 28.

The square root of 257275 is about 507.2228307164. Note that the first 3 decimals coincide. The cubic root of 257275 is about 63.6012809098.

The spelling of 257275 in words is "two hundred fifty-seven thousand, two hundred seventy-five".

Divisors: 1 5 25 41 205 251 1025 1255 6275 10291 51455 257275