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61054441 = 725572237
BaseRepresentation
bin1110100011100…
…1110111101001
311020212212221121
43220321313221
5111112220231
610020335241
71340645200
oct350716751
9136785847
1061054441
1131511118
1218544521
13c858bb6
148174237
155560311
hex3a39de9

61054441 has 12 divisors (see below), whose sum is σ = 71181828. Its totient is φ = 52215072.

The previous prime is 61054423. The next prime is 61054447. The reversal of 61054441 is 14445016.

It can be written as a sum of positive squares in 2 ways, for example, as 25401600 + 35652841 = 5040^2 + 5971^2 .

It is not a de Polignac number, because 61054441 - 221 = 58957289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61054447) 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, 26175 + ... + 28411.

It is an arithmetic number, because the mean of its divisors is an integer number (5931819).

Almost surely, 261054441 is an apocalyptic number.

It is an amenable number.

61054441 is a deficient number, since it is larger than the sum of its proper divisors (10127387).

61054441 is a wasteful number, since it uses less digits than its factorization.

61054441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 61054441 is about 7813.7341265236. The cubic root of 61054441 is about 393.7667910535.

Adding to 61054441 its reverse (14445016), we get a palindrome (75499457).

The spelling of 61054441 in words is "sixty-one million, fifty-four thousand, four hundred forty-one".

Divisors: 1 7 49 557 2237 3899 15659 27293 109613 1246009 8722063 61054441