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52707961 = 101521861
BaseRepresentation
bin1100100100010…
…0001001111001
310200011211201201
43021010021321
5101443123321
65121414201
71210003345
oct311041171
9120154651
1052707961
11278302a9
121579a361
13abc5b57
147000625
154962291
hex3244279

52707961 has 4 divisors (see below), whose sum is σ = 53229924. Its totient is φ = 52186000.

The previous prime is 52707953. The next prime is 52707979. The reversal of 52707961 is 16970725.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50694400 + 2013561 = 7120^2 + 1419^2 .

It is a cyclic number.

It is not a de Polignac number, because 52707961 - 23 = 52707953 is a prime.

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 52707961.

It is not an unprimeable number, because it can be changed into a prime (52707461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260830 + ... + 261031.

It is an arithmetic number, because the mean of its divisors is an integer number (13307481).

Almost surely, 252707961 is an apocalyptic number.

It is an amenable number.

52707961 is a deficient number, since it is larger than the sum of its proper divisors (521963).

52707961 is a wasteful number, since it uses less digits than its factorization.

52707961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521962.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 52707961 is about 7260.0248622164. The cubic root of 52707961 is about 374.9373785804.

It can be divided in two parts, 5270 and 7961, that added together give a palindrome (13231).

The spelling of 52707961 in words is "fifty-two million, seven hundred seven thousand, nine hundred sixty-one".

Divisors: 1 101 521861 52707961