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52980581 = 314333947
BaseRepresentation
bin1100101000011…
…0101101100101
310200200200200202
43022012231211
5102030334311
65131320245
71212220223
oct312065545
9120620622
1052980581
11279a7105
12158b0085
13ac8cc74
147071b13
1549b7e3b
hex3286b65

52980581 has 8 divisors (see below), whose sum is σ = 54829824. Its totient is φ = 51140160.

The previous prime is 52980541. The next prime is 52980611. The reversal of 52980581 is 18508925.

52980581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-52980581 is a prime.

It is a super-2 number, since 2×529805812 = 5613883926195122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52980511) 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 7 ways as a sum of consecutive naturals, for example, 11450 + ... + 15396.

It is an arithmetic number, because the mean of its divisors is an integer number (6853728).

Almost surely, 252980581 is an apocalyptic number.

It is an amenable number.

52980581 is a deficient number, since it is larger than the sum of its proper divisors (1849243).

52980581 is a wasteful number, since it uses less digits than its factorization.

52980581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 52980581 is about 7278.7760646966. The cubic root of 52980581 is about 375.5826935205.

The spelling of 52980581 in words is "fifty-two million, nine hundred eighty thousand, five hundred eighty-one".

Divisors: 1 31 433 3947 13423 122357 1709051 52980581