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52687301 = 172182309
BaseRepresentation
bin1100100011111…
…1000111000101
310200010210101112
43020333013011
5101441443201
65121134405
71206556202
oct310770705
9120123345
1052687301
1127816827
121578a405
13abb9624
146dd6ca9
15495b0bb
hex323f1c5

52687301 has 6 divisors (see below), whose sum is σ = 55969170. Its totient is φ = 49587776.

The previous prime is 52687291. The next prime is 52687351. The reversal of 52687301 is 10378625.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 33756100 + 18931201 = 5810^2 + 4351^2 .

It is a de Polignac number, because none of the positive numbers 2k-52687301 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 (52687351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90866 + ... + 91443.

It is an arithmetic number, because the mean of its divisors is an integer number (9328195).

Almost surely, 252687301 is an apocalyptic number.

It is an amenable number.

52687301 is a deficient number, since it is larger than the sum of its proper divisors (3281869).

52687301 is a wasteful number, since it uses less digits than its factorization.

52687301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182343 (or 182326 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 52687301 is about 7258.6018626179. The cubic root of 52687301 is about 374.8883839668. Note that the first 3 decimals are identical.

The spelling of 52687301 in words is "fifty-two million, six hundred eighty-seven thousand, three hundred one".

Divisors: 1 17 289 182309 3099253 52687301