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52241281 = 199262519
BaseRepresentation
bin1100011101001…
…0001110000001
310122022010120021
43013102032001
5101333210111
65103413441
71203020641
oct307221601
9118263507
1052241281
1127541714
12155b4281
13aa91601
146d1c521
1548bdd71
hex31d2381

52241281 has 4 divisors (see below), whose sum is σ = 52504000. Its totient is φ = 51978564.

The previous prime is 52241243. The next prime is 52241297. The reversal of 52241281 is 18214225.

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 52241281 - 217 = 52110209 is a prime.

It is a super-2 number, since 2×522412812 = 5458302881041922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52241201) 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, 131061 + ... + 131458.

It is an arithmetic number, because the mean of its divisors is an integer number (13126000).

Almost surely, 252241281 is an apocalyptic number.

It is an amenable number.

52241281 is a deficient number, since it is larger than the sum of its proper divisors (262719).

52241281 is a wasteful number, since it uses less digits than its factorization.

52241281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262718.

The product of its digits is 1280, while the sum is 25.

The square root of 52241281 is about 7227.8130163971. The cubic root of 52241281 is about 373.8275225374.

The spelling of 52241281 in words is "fifty-two million, two hundred forty-one thousand, two hundred eighty-one".

Divisors: 1 199 262519 52241281