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50707081 = 271187111
BaseRepresentation
bin1100000101101…
…1101010001001
310112102012001001
43001123222021
5100440111311
65010455001
71154001025
oct301335211
9115365031
1050707081
1126693a87
1214b94461
13a6751b9
146a3d385
1546b94c1
hex305ba89

50707081 has 4 divisors (see below), whose sum is σ = 50894464. Its totient is φ = 50519700.

The previous prime is 50707049. The next prime is 50707093. The reversal of 50707081 is 18070705.

It is a happy number.

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 50707081 - 25 = 50707049 is a prime.

It is a super-4 number, since 4×507070814 (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50707001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93285 + ... + 93826.

It is an arithmetic number, because the mean of its divisors is an integer number (12723616).

Almost surely, 250707081 is an apocalyptic number.

It is an amenable number.

50707081 is a deficient number, since it is larger than the sum of its proper divisors (187383).

50707081 is a wasteful number, since it uses less digits than its factorization.

50707081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187382.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 50707081 is about 7120.8904639799. The cubic root of 50707081 is about 370.1316332223.

Adding to 50707081 its reverse (18070705), we get a palindrome (68777786).

The spelling of 50707081 in words is "fifty million, seven hundred seven thousand, eighty-one".

Divisors: 1 271 187111 50707081