Search a number
-
+
6161025061 = 7977987659
BaseRepresentation
bin1011011110011100…
…11100100000100101
3120220101001111112101
411233032130200211
5100104210300221
62455204052101
7305450564122
oct55716344045
916811044471
106161025061
112681813354
12123b394031
13772557c79
14426367749
15260d43d91
hex16f39c825

6161025061 has 4 divisors (see below), whose sum is σ = 6239012800. Its totient is φ = 6083037324.

The previous prime is 6161025053. The next prime is 6161025077. The reversal of 6161025061 is 1605201616.

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 6161025061 - 23 = 6161025053 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 (6161025001) 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, 38993751 + ... + 38993908.

It is an arithmetic number, because the mean of its divisors is an integer number (1559753200).

Almost surely, 26161025061 is an apocalyptic number.

It is an amenable number.

6161025061 is a deficient number, since it is larger than the sum of its proper divisors (77987739).

6161025061 is an equidigital number, since it uses as much as digits as its factorization.

6161025061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77987738.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 6161025061 is about 78492.1974529953. The cubic root of 6161025061 is about 1833.2329665789.

Adding to 6161025061 its reverse (1605201616), we get a palindrome (7766226677).

The spelling of 6161025061 in words is "six billion, one hundred sixty-one million, twenty-five thousand, sixty-one".

Divisors: 1 79 77987659 6161025061