Search a number
-
+
52080981 = 322377849
BaseRepresentation
bin1100011010101…
…1000101010101
310121222222200020
43012223011111
5101313042411
65100135353
71201452411
oct306530525
9117888606
1052080981
1127442237
1215537559
13aa36664
146cb9d41
15488b606
hex31ab155

52080981 has 8 divisors (see below), whose sum is σ = 69753600. Its totient is φ = 34564512.

The previous prime is 52080971. The next prime is 52080983. The reversal of 52080981 is 18908025.

It is a happy number.

52080981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52080981 - 223 = 43692373 is a prime.

It is a super-2 number, since 2×520809812 = 5424857163844722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52080983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38256 + ... + 39593.

It is an arithmetic number, because the mean of its divisors is an integer number (8719200).

Almost surely, 252080981 is an apocalyptic number.

It is an amenable number.

52080981 is a deficient number, since it is larger than the sum of its proper divisors (17672619).

52080981 is a wasteful number, since it uses less digits than its factorization.

52080981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78075.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 52080981 is about 7216.7153885961. The cubic root of 52080981 is about 373.4447731910. Note that the first 3 decimals are identical.

The spelling of 52080981 in words is "fifty-two million, eighty thousand, nine hundred eighty-one".

Divisors: 1 3 223 669 77849 233547 17360327 52080981