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52905015 = 335391889
BaseRepresentation
bin1100100111010…
…0010000110111
310200112212001000
43021310100313
5102020430030
65125534343
71211454012
oct311642067
9120485030
1052905015
1127955359
12158743b3
13ac64757
147052379
1549a0860
hex3274437

52905015 has 16 divisors (see below), whose sum is σ = 94053600. Its totient is φ = 28215936.

The previous prime is 52905001. The next prime is 52905031. The reversal of 52905015 is 51050925.

52905015 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 52905015 - 212 = 52900919 is a prime.

It is a super-2 number, since 2×529050152 = 5597881224300450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 52905015.

It is a congruent number.

It is an unprimeable number.

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, 195810 + ... + 196079.

It is an arithmetic number, because the mean of its divisors is an integer number (5878350).

Almost surely, 252905015 is an apocalyptic number.

52905015 is a deficient number, since it is larger than the sum of its proper divisors (41148585).

52905015 is a wasteful number, since it uses less digits than its factorization.

52905015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391903 (or 391897 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 52905015 is about 7273.5833672269. The cubic root of 52905015 is about 375.4040445051.

The spelling of 52905015 in words is "fifty-two million, nine hundred five thousand, fifteen".

Divisors: 1 3 5 9 15 27 45 135 391889 1175667 1959445 3527001 5878335 10581003 17635005 52905015