Search a number
-
+
2855131 = 3122971
BaseRepresentation
bin1010111001000011011011
312101001111121
422321003123
51212331011
6141110111
733160666
oct12710333
95331447
102855131
111680114
12b58337
1378c736
145446dd
153b5e71
hex2b90db

2855131 has 6 divisors (see below), whose sum is σ = 2951196. Its totient is φ = 2762100.

The previous prime is 2855129. The next prime is 2855141. The reversal of 2855131 is 1315582.

It is a happy number.

It is not a de Polignac number, because 2855131 - 21 = 2855129 is a prime.

It is a super-2 number, since 2×28551312 = 16303546054322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2855096 and 2855105.

It is not an unprimeable number, because it can be changed into a prime (2855101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 525 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (491866).

22855131 is an apocalyptic number.

2855131 is a deficient number, since it is larger than the sum of its proper divisors (96065).

2855131 is an equidigital number, since it uses as much as digits as its factorization.

2855131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033 (or 3002 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 2855131 is about 1689.7132892890. The cubic root of 2855131 is about 141.8650274709.

It can be divided in two parts, 28551 and 31, that added together give a palindrome (28582).

The spelling of 2855131 in words is "two million, eight hundred fifty-five thousand, one hundred thirty-one".

Divisors: 1 31 961 2971 92101 2855131