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50747761 = 149421809
BaseRepresentation
bin1100000110010…
…1100101110001
310112111020211201
43001211211301
5100442412021
65011411201
71154230441
oct301454561
9115436751
1050747761
11267115a9
1214bb3b01
13a68a87c
146a50121
1546c6591
hex3065971

50747761 has 8 divisors (see below), whose sum is σ = 51273000. Its totient is φ = 50225280.

The previous prime is 50747717. The next prime is 50747779. The reversal of 50747761 is 16774705.

It can be written as a sum of positive squares in 4 ways, for example, as 53361 + 50694400 = 231^2 + 7120^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 50747761 - 225 = 17193329 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 50747761.

It is not an unprimeable number, because it can be changed into a prime (50747701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62325 + ... + 63133.

It is an arithmetic number, because the mean of its divisors is an integer number (6409125).

Almost surely, 250747761 is an apocalyptic number.

It is an amenable number.

50747761 is a deficient number, since it is larger than the sum of its proper divisors (525239).

50747761 is a wasteful number, since it uses less digits than its factorization.

50747761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 50747761 is about 7123.7462756614. The cubic root of 50747761 is about 370.2305867270.

The spelling of 50747761 in words is "fifty million, seven hundred forty-seven thousand, seven hundred sixty-one".

Divisors: 1 149 421 809 62729 120541 340589 50747761