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52055387 = 614212027
BaseRepresentation
bin1100011010010…
…0110101011011
310121221200120022
43012210311123
5101311233022
65055421055
71201314656
oct306446533
9117850508
1052055387
1127424a8a
121552478b
13aa27b07
146cb089d
154883c42
hex31a4d5b

52055387 has 8 divisors (see below), whose sum is σ = 53060592. Its totient is φ = 51055200.

The previous prime is 52055357. The next prime is 52055389. The reversal of 52055387 is 78355025.

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 52055387 - 212 = 52051291 is a prime.

It is a super-3 number, since 3×520553873 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52055389) 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, 24668 + ... + 26694.

It is an arithmetic number, because the mean of its divisors is an integer number (6632574).

Almost surely, 252055387 is an apocalyptic number.

52055387 is a deficient number, since it is larger than the sum of its proper divisors (1005205).

52055387 is a wasteful number, since it uses less digits than its factorization.

52055387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 52055387 is about 7214.9419263082. The cubic root of 52055387 is about 373.3835895532.

The spelling of 52055387 in words is "fifty-two million, fifty-five thousand, three hundred eighty-seven".

Divisors: 1 61 421 2027 25681 123647 853367 52055387