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50138753 = 77162679
BaseRepresentation
bin1011111101000…
…0111010000001
310111100022102212
42333100322001
5100313420003
64550351505
71146113060
oct277207201
9114308385
1050138753
1126335a95
121495b595
13a506602
1469321d7
154605dd8
hex2fd0e81

50138753 has 4 divisors (see below), whose sum is σ = 57301440. Its totient is φ = 42976068.

The previous prime is 50138717. The next prime is 50138789. The reversal of 50138753 is 35783105.

50138753 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35783105 = 57156621.

It is an interprime number because it is at equal distance from previous prime (50138717) and next prime (50138789).

It is a cyclic number.

It is not a de Polignac number, because 50138753 - 28 = 50138497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50138653) 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, 3581333 + ... + 3581346.

It is an arithmetic number, because the mean of its divisors is an integer number (14325360).

Almost surely, 250138753 is an apocalyptic number.

It is an amenable number.

50138753 is a deficient number, since it is larger than the sum of its proper divisors (7162687).

50138753 is an equidigital number, since it uses as much as digits as its factorization.

50138753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162686.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 50138753 is about 7080.8723332652. The cubic root of 50138753 is about 368.7436154022.

The spelling of 50138753 in words is "fifty million, one hundred thirty-eight thousand, seven hundred fifty-three".

Divisors: 1 7 7162679 50138753