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102044000561 = 449227269489
BaseRepresentation
bin101111100001001001…
…0111110000100110001
3100202101121210022220012
41133002102332010301
53132441231004221
6114513421024305
710241513456546
oct1370222760461
9322347708805
10102044000561
113a3051a5a68
121793a3b5095
139813121529
144d206d0bcd
1529c38de65b
hex17c24be131

102044000561 has 4 divisors (see below), whose sum is σ = 102271270500. Its totient is φ = 101816730624.

The previous prime is 102044000551. The next prime is 102044000567. The reversal of 102044000561 is 165000440201.

102044000561 = 2258802 + 2258812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51021774400 + 51022226161 = 225880^2 + 225881^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-102044000561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102044000567) 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, 113634296 + ... + 113635193.

It is an arithmetic number, because the mean of its divisors is an integer number (25567817625).

Almost surely, 2102044000561 is an apocalyptic number.

102044000561 is the 225881-st centered square number.

It is an amenable number.

102044000561 is a deficient number, since it is larger than the sum of its proper divisors (227269939).

102044000561 is an equidigital number, since it uses as much as digits as its factorization.

102044000561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227269938.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 102044000561 its reverse (165000440201), we get a palindrome (267044440762).

The spelling of 102044000561 in words is "one hundred two billion, forty-four million, five hundred sixty-one", and thus it is an aban number.

Divisors: 1 449 227269489 102044000561