Search a number
-
+
52810931 = 449117619
BaseRepresentation
bin1100100101110…
…1010010110011
310200101001222102
43021131102303
5102004422211
65123531015
71210612505
oct311352263
9120331872
1052810931
11278a06a8
1215829a6b
13ac30994
147029d75
154982a3b
hex325d4b3

52810931 has 4 divisors (see below), whose sum is σ = 52929000. Its totient is φ = 52692864.

The previous prime is 52810873. The next prime is 52810957. The reversal of 52810931 is 13901825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52810931 - 26 = 52810867 is a prime.

It is a super-2 number, since 2×528109312 = 5577988866173522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52810894 and 52810903.

It is not an unprimeable number, because it can be changed into a prime (52810031) 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, 58361 + ... + 59258.

It is an arithmetic number, because the mean of its divisors is an integer number (13232250).

Almost surely, 252810931 is an apocalyptic number.

52810931 is a deficient number, since it is larger than the sum of its proper divisors (118069).

52810931 is a wasteful number, since it uses less digits than its factorization.

52810931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118068.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 52810931 is about 7267.1129755908. The cubic root of 52810931 is about 375.1813783317.

The spelling of 52810931 in words is "fifty-two million, eight hundred ten thousand, nine hundred thirty-one".

Divisors: 1 449 117619 52810931