Search a number
-
+
55050761 = 311775831
BaseRepresentation
bin1101001000000…
…0001000001001
310211120212110002
43102000020021
5103043111021
65243532345
71235631563
oct322001011
9124525402
1055050761
11290904a7
121652a0b5
13b53631c
147450333
154c7650b
hex3480209

55050761 has 4 divisors (see below), whose sum is σ = 56826624. Its totient is φ = 53274900.

The previous prime is 55050739. The next prime is 55050791. The reversal of 55050761 is 16705055.

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 a de Polignac number, because none of the positive numbers 2k-55050761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55050791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887885 + ... + 887946.

It is an arithmetic number, because the mean of its divisors is an integer number (14206656).

Almost surely, 255050761 is an apocalyptic number.

It is an amenable number.

55050761 is a deficient number, since it is larger than the sum of its proper divisors (1775863).

55050761 is a wasteful number, since it uses less digits than its factorization.

55050761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775862.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 55050761 is about 7419.6200037468. The cubic root of 55050761 is about 380.4122050534.

The spelling of 55050761 in words is "fifty-five million, fifty thousand, seven hundred sixty-one".

Divisors: 1 31 1775831 55050761