Search a number
-
+
61081041 = 372908621
BaseRepresentation
bin1110100100000…
…0010111010001
311020221020102210
43221000113101
5111114043131
610021102333
71341115560
oct351002721
9136836383
1061081041
113152a0aa
12185579a9
13c868038
14817dbd7
155568146
hex3a405d1

61081041 has 8 divisors (see below), whose sum is σ = 93075904. Its totient is φ = 34903440.

The previous prime is 61081037. The next prime is 61081049. The reversal of 61081041 is 14018016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61081041 - 22 = 61081037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2908621 = 61081041 / (6 + 1 + 0 + 8 + 1 + 0 + 4 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61080999 and 61081017.

It is not an unprimeable number, because it can be changed into a prime (61081049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454290 + ... + 1454331.

It is an arithmetic number, because the mean of its divisors is an integer number (11634488).

Almost surely, 261081041 is an apocalyptic number.

It is an amenable number.

61081041 is a deficient number, since it is larger than the sum of its proper divisors (31994863).

61081041 is a wasteful number, since it uses less digits than its factorization.

61081041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908631.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 61081041 is about 7815.4360722867. The cubic root of 61081041 is about 393.8239677618.

Adding to 61081041 its reverse (14018016), we get a palindrome (75099057).

The spelling of 61081041 in words is "sixty-one million, eighty-one thousand, forty-one".

Divisors: 1 3 7 21 2908621 8725863 20360347 61081041