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55315241 = 69180051
BaseRepresentation
bin1101001100000…
…0101100101001
310212002022020122
43103000230221
5103130041431
65253333025
71241112632
oct323005451
9125068218
1055315241
1129251183
1216637175
13b5c9817
1474bc889
154cc9a7b
hex34c0b29

55315241 has 4 divisors (see below), whose sum is σ = 55395984. Its totient is φ = 55234500.

The previous prime is 55315237. The next prime is 55315279. The reversal of 55315241 is 14251355.

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 55315241 - 22 = 55315237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55315241.

It is not an unprimeable number, because it can be changed into a prime (55315291) 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 3 ways as a sum of consecutive naturals, for example, 39335 + ... + 40716.

It is an arithmetic number, because the mean of its divisors is an integer number (13848996).

Almost surely, 255315241 is an apocalyptic number.

It is an amenable number.

55315241 is a deficient number, since it is larger than the sum of its proper divisors (80743).

55315241 is an equidigital number, since it uses as much as digits as its factorization.

55315241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80742.

The product of its digits is 3000, while the sum is 26.

The square root of 55315241 is about 7437.4216634530. The cubic root of 55315241 is about 381.0204359818.

Adding to 55315241 its reverse (14251355), we get a palindrome (69566596).

The spelling of 55315241 in words is "fifty-five million, three hundred fifteen thousand, two hundred forty-one".

Divisors: 1 691 80051 55315241