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6161055061 = 7880150723
BaseRepresentation
bin1011011110011101…
…00011110101010101
3120220101010000200111
411233032203311111
5100104212230221
62455204443021
7305451050440
oct55716436525
916811100614
106161055061
112681833947
12123b3a9471
13772568815
14426374657
15260d4cbe1
hex16f3a3d55

6161055061 has 4 divisors (see below), whose sum is σ = 7041205792. Its totient is φ = 5280904332.

The previous prime is 6161055059. The next prime is 6161055067. The reversal of 6161055061 is 1605501616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6161055061 - 21 = 6161055059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161055067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440075355 + ... + 440075368.

It is an arithmetic number, because the mean of its divisors is an integer number (1760301448).

Almost surely, 26161055061 is an apocalyptic number.

It is an amenable number.

6161055061 is a deficient number, since it is larger than the sum of its proper divisors (880150731).

6161055061 is an equidigital number, since it uses as much as digits as its factorization.

6161055061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880150730.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 6161055061 is about 78492.3885545599. The cubic root of 6161055061 is about 1833.2359421065.

Adding to 6161055061 its reverse (1605501616), we get a palindrome (7766556677).

The spelling of 6161055061 in words is "six billion, one hundred sixty-one million, fifty-five thousand, sixty-one".

Divisors: 1 7 880150723 6161055061