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50312021 = 433173691
BaseRepresentation
bin1011111111101…
…1001101010101
310111200010010012
42333323031111
5100334441041
64554210005
71150434164
oct277731525
9114603105
1050312021
1126444191
1214a23905
13a567436
1469793db
15463c3eb
hex2ffb355

50312021 has 8 divisors (see below), whose sum is σ = 51658464. Its totient is φ = 48973680.

The previous prime is 50312011. The next prime is 50312051. The reversal of 50312021 is 12021305.

It is a happy number.

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 50312021 - 26 = 50311957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50311987 and 50312005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50312011) 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, 11786 + ... + 15476.

It is an arithmetic number, because the mean of its divisors is an integer number (6457308).

Almost surely, 250312021 is an apocalyptic number.

It is an amenable number.

50312021 is a deficient number, since it is larger than the sum of its proper divisors (1346443).

50312021 is a wasteful number, since it uses less digits than its factorization.

50312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 50312021 is about 7093.0967144118. The cubic root of 50312021 is about 369.1678914219.

Adding to 50312021 its reverse (12021305), we get a palindrome (62333326).

The spelling of 50312021 in words is "fifty million, three hundred twelve thousand, twenty-one".

Divisors: 1 43 317 3691 13631 158713 1170047 50312021