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52860281 = 71744511
BaseRepresentation
bin1100100110100…
…1010101111001
310200110120200012
43021221111321
5102013012111
65124551305
71211206415
oct311512571
9120416605
1052860281
1127924791
1215852535
13ac4a296
14703dd45
15499248b
hex3269579

52860281 has 4 divisors (see below), whose sum is σ = 53604864. Its totient is φ = 52115700.

The previous prime is 52860277. The next prime is 52860317. The reversal of 52860281 is 18206825.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52860281 - 22 = 52860277 is a prime.

It is a super-2 number, since 2×528602812 = 5588418614797922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52860251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372185 + ... + 372326.

It is an arithmetic number, because the mean of its divisors is an integer number (13401216).

Almost surely, 252860281 is an apocalyptic number.

It is an amenable number.

52860281 is a deficient number, since it is larger than the sum of its proper divisors (744583).

52860281 is an equidigital number, since it uses as much as digits as its factorization.

52860281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744582.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 52860281 is about 7270.5076163910. The cubic root of 52860281 is about 375.2982066498.

The spelling of 52860281 in words is "fifty-two million, eight hundred sixty thousand, two hundred eighty-one".

Divisors: 1 71 744511 52860281