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52405111 = 1118126321
BaseRepresentation
bin1100011111101…
…0001101110111
310122121110022001
43013322031313
5101403430421
65111120131
71204302403
oct307721567
9118543261
1052405111
1127643810
1215673047
13ab1b055
146d62103
154902691
hex31fa377

52405111 has 8 divisors (see below), whose sum is σ = 57487248. Its totient is φ = 47376000.

The previous prime is 52405099. The next prime is 52405147. The reversal of 52405111 is 11150425.

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 52405111 - 25 = 52405079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52405151) 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 7 ways as a sum of consecutive naturals, for example, 11170 + ... + 15151.

It is an arithmetic number, because the mean of its divisors is an integer number (7185906).

Almost surely, 252405111 is an apocalyptic number.

52405111 is a deficient number, since it is larger than the sum of its proper divisors (5082137).

52405111 is a wasteful number, since it uses less digits than its factorization.

52405111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26513.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 52405111 is about 7239.1374486191. The cubic root of 52405111 is about 374.2178923246.

Adding to 52405111 its reverse (11150425), we get a palindrome (63555536).

The spelling of 52405111 in words is "fifty-two million, four hundred five thousand, one hundred eleven".

Divisors: 1 11 181 1991 26321 289531 4764101 52405111