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50525013 = 3711218723
BaseRepresentation
bin1100000010111…
…1001101010101
310112001221021210
43000233031111
5100413300023
65002532033
71152312150
oct300571525
9115057253
1050525013
112657a210
1214b07019
13a610376
1469d2c97
154680593
hex302f355

50525013 has 16 divisors (see below), whose sum is σ = 83990016. Its totient is φ = 26246640.

The previous prime is 50524993. The next prime is 50525021. The reversal of 50525013 is 31052505.

50525013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50525013 - 29 = 50524501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50525023) 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 15 ways as a sum of consecutive naturals, for example, 109131 + ... + 109592.

It is an arithmetic number, because the mean of its divisors is an integer number (5249376).

Almost surely, 250525013 is an apocalyptic number.

It is an amenable number.

50525013 is a deficient number, since it is larger than the sum of its proper divisors (33465003).

50525013 is a wasteful number, since it uses less digits than its factorization.

50525013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218744.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 50525013 is about 7108.0948924448. The cubic root of 50525013 is about 369.6881057993.

Adding to 50525013 its reverse (31052505), we get a palindrome (81577518).

The spelling of 50525013 in words is "fifty million, five hundred twenty-five thousand, thirteen".

Divisors: 1 3 7 11 21 33 77 231 218723 656169 1531061 2405953 4593183 7217859 16841671 50525013