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50012013 = 319187281
BaseRepresentation
bin1011111011000…
…1111101101101
310111002212120210
42332301331231
5100300341023
64543533033
71145044422
oct276617555
9114085523
1050012013
1126259847
12148ba179
13a490a0c
1468dbd49
1545cd593
hex2fb1f6d

50012013 has 8 divisors (see below), whose sum is σ = 67032576. Its totient is φ = 33166400.

The previous prime is 50012003. The next prime is 50012029. The reversal of 50012013 is 31021005.

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 50012013 - 221 = 47914861 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50012003) 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, 43068 + ... + 44213.

It is an arithmetic number, because the mean of its divisors is an integer number (8379072).

Almost surely, 250012013 is an apocalyptic number.

It is an amenable number.

50012013 is a deficient number, since it is larger than the sum of its proper divisors (17020563).

50012013 is a wasteful number, since it uses less digits than its factorization.

50012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87475.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 50012013 is about 7071.9172082258. The cubic root of 50012013 is about 368.4326516817.

Adding to 50012013 its reverse (31021005), we get a palindrome (81033018).

The spelling of 50012013 in words is "fifty million, twelve thousand, thirteen".

Divisors: 1 3 191 573 87281 261843 16670671 50012013