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52144631 = 7111076329
BaseRepresentation
bin1100011011101…
…0100111110111
310122010012222122
43012322213313
5101322112011
65101350155
71202136110
oct306724767
9118105878
1052144631
1127486040
121556835b
13aa59616
146cd5207
1548a03db
hex31ba9f7

52144631 has 16 divisors (see below), whose sum is σ = 65629440. Its totient is φ = 40246080.

The previous prime is 52144597. The next prime is 52144643. The reversal of 52144631 is 13644125.

It is not a de Polignac number, because 52144631 - 214 = 52128247 is a prime.

It is a super-2 number, since 2×521446312 = 5438125084252322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52144631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52144031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5075 + ... + 11403.

It is an arithmetic number, because the mean of its divisors is an integer number (4101840).

Almost surely, 252144631 is an apocalyptic number.

52144631 is a deficient number, since it is larger than the sum of its proper divisors (13484809).

52144631 is a wasteful number, since it uses less digits than its factorization.

52144631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454.

The product of its digits is 2880, while the sum is 26.

The square root of 52144631 is about 7221.1239429884. The cubic root of 52144631 is about 373.5968445911.

Adding to 52144631 its reverse (13644125), we get a palindrome (65788756).

The spelling of 52144631 in words is "fifty-two million, one hundred forty-four thousand, six hundred thirty-one".

Divisors: 1 7 11 77 107 749 1177 6329 8239 44303 69619 487333 677203 4740421 7449233 52144631