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52761381 = 317587127
BaseRepresentation
bin1100100101000…
…1001100100101
310200021120000020
43021101030211
5102001331011
65122505353
71210315161
oct311211445
9120246006
1052761381
1127867452
1215805259
13ac1426a
147015ca1
154973006
hex3251325

52761381 has 4 divisors (see below), whose sum is σ = 70348512. Its totient is φ = 35174252.

The previous prime is 52761343. The next prime is 52761419. The reversal of 52761381 is 18316725.

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 an interprime number because it is at equal distance from previous prime (52761343) and next prime (52761419).

It is a cyclic number.

It is not a de Polignac number, because 52761381 - 27 = 52761253 is a prime.

It is a super-2 number, since 2×527613812 = 5567526650054322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52761311) 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, 8793561 + ... + 8793566.

It is an arithmetic number, because the mean of its divisors is an integer number (17587128).

Almost surely, 252761381 is an apocalyptic number.

It is an amenable number.

52761381 is a deficient number, since it is larger than the sum of its proper divisors (17587131).

52761381 is a wasteful number, since it uses less digits than its factorization.

52761381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17587130.

The product of its digits is 10080, while the sum is 33.

The square root of 52761381 is about 7263.7029812624. The cubic root of 52761381 is about 375.0640032978.

The spelling of 52761381 in words is "fifty-two million, seven hundred sixty-one thousand, three hundred eighty-one".

Divisors: 1 3 17587127 52761381