6281145 has 40 divisors (see below), whose sum is σ = 12135816. Its totient is φ = 3089664.

The previous prime is 6281141. The next prime is 6281161. The reversal of 6281145 is 5411826.

It can be written as a sum of positive squares in 4 ways, for example, as 110889 + 6170256 = 333^2 + 2484^2 .

It is not a de Polignac number, because 6281145 - 2² = 6281141 is a prime.

It is a super-2 number, since 2×6281145² = 78905565022050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6281141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4669 + ... + 5861.

Almost surely, 2^6281145 is an apocalyptic number.

6281145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6281145 is a deficient number, since it is larger than the sum of its proper divisors (5854671).

6281145 is a wasteful number, since it uses less digits than its factorization.

6281145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1214 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 6281145 is about 2506.2212591868. The cubic root of 6281145 is about 184.5070391921.

The spelling of 6281145 in words is "six million, two hundred eighty-one thousand, one hundred forty-five".