[go: up one dir, main page]

Search a number
-
+
115417561 = 716488223
BaseRepresentation
bin1101110000100…
…10000111011001
322001011211010111
412320102013121
5214021330221
615241444321
72601014230
oct670220731
9261154114
10115417561
115a171a16
12327a06a1
131abb121c
1411485b17
15a1ecbe1
hex6e121d9

115417561 has 4 divisors (see below), whose sum is σ = 131905792. Its totient is φ = 98929332.

The previous prime is 115417553. The next prime is 115417567. The reversal of 115417561 is 165714511.

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 115417561 - 23 = 115417553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115417567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8244105 + ... + 8244118.

It is an arithmetic number, because the mean of its divisors is an integer number (32976448).

Almost surely, 2115417561 is an apocalyptic number.

It is an amenable number.

115417561 is a deficient number, since it is larger than the sum of its proper divisors (16488231).

115417561 is an equidigital number, since it uses as much as digits as its factorization.

115417561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16488230.

The product of its digits is 4200, while the sum is 31.

The square root of 115417561 is about 10743.2565360788. The cubic root of 115417561 is about 486.8822748804.

The spelling of 115417561 in words is "one hundred fifteen million, four hundred seventeen thousand, five hundred sixty-one".

Divisors: 1 7 16488223 115417561