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61144283 = 67639041
BaseRepresentation
bin1110100100111…
…1110011011011
311021001110012002
43221033303123
5111123104113
610022311215
71341501134
oct351176333
9137043162
1061144283
1131572672
121858850b
13c88aa65
148198c8b
15557bc58
hex3a4fcdb

61144283 has 4 divisors (see below), whose sum is σ = 61160088. Its totient is φ = 61128480.

The previous prime is 61144253. The next prime is 61144297. The reversal of 61144283 is 38244116.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61144283 - 26 = 61144219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61144253) 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 3 ways as a sum of consecutive naturals, for example, 2243 + ... + 11283.

It is an arithmetic number, because the mean of its divisors is an integer number (15290022).

Almost surely, 261144283 is an apocalyptic number.

61144283 is a deficient number, since it is larger than the sum of its proper divisors (15805).

61144283 is an equidigital number, since it uses as much as digits as its factorization.

61144283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15804.

The product of its digits is 4608, while the sum is 29.

The square root of 61144283 is about 7819.4809930071. The cubic root of 61144283 is about 393.9598398432.

Adding to 61144283 its reverse (38244116), we get a palindrome (99388399).

The spelling of 61144283 in words is "sixty-one million, one hundred forty-four thousand, two hundred eighty-three".

Divisors: 1 6763 9041 61144283